MAX3243 Status: ACTIVE

3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV ESD (HBM) Protection

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Datasheet

MAX3243 (Rev. L) (PDF 483 KB)
18 Mar 2004

	MAX3243
Data Rate(kbps)	250
Drivers Per Package	3
Receivers Per Package	5
ESD HBM(kV)	+/-15
Supply Voltage(s)(V)	3.3 or 5.0
ICC(Max)(mA)	1
Operating Temp Range(Celsius)	-40 to 85,0 to 70
Pin/Package	28SOIC, 28SSOP, 28TSSOP
Approx. Price (US$)	0.88 \| 1ku
Rating	Catalog
Footprint	MAX3243
	Samples
	Inventory

Other qualified versions of MAX3243

Version	Part Number	Definition
Enhanced Product	MAX3243-EP	Supports Defense, Aerospace and Medical Applications

Customers Who Evaluated This Product Also Evaluated

MAX3243E: 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV IEC ESD Protection
MAX3232: 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver
TRS3243E: 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection
SN74LVC244A: Octal Buffer/Driver With 3-State Outputs
SN74LVC1G08: Single 2-Input Positive-AND Gate
TLV320AIC3104: Low-Power Stereo CODEC with 6 Inputs, 6 Outputs, HP Amp and Enhanced Digital Effects

Product Information

Features

Single-Chip and Single-Supply Interface for IBM™ PC/AT™ Serial Port
RS-232 Bus-Pin ESD Protection Exceeds ±15-kV Using Human-Body Model (HBM)
Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V V_CC Supply
Three Drivers and Five Receivers
Operates up to 250 kbit/s
Designed to Transmit at a Data Rate of 250 kbit/s
Low Standby Current ...1 µA Typical
External Capacitors ...4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Always-Active Noninverting Receiver Output (ROUT2B)
Designed to Be Interchangeable With Maxim MAX3243
Alternative High-Speed Pin-Compatible Device (1 Mbit/s)
- SNx5C3243
Serial-Mouse Driveability
Auto-Powerdown Feature to Disable Driver Outputs When No Valid RS-232 Signal Is Sensed
Applications
- Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment

AT, IBM, and PC are trademarks of International Business Machines Corporation.

Description

The MAX3243 device consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM) protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. This combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, or compatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.

Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF\ is high. During this mode of operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF\ is set low, both drivers and receivers (except ROUT2B) are shut off, and the supply current is reduced to 1 µA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur.

Auto-powerdown can be disabled when FORCEON and FORCEOFF\ are high and should be done when driving a serial mouse. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to any receiver input. The INVALID\ output is used to notify the user if an RS-232 signal is present at any receiver input. INVALID\ is high (valid data) if any receiver input voltage is greater than 2.7 V or less than –2.7 V or has been between –0.3 V and 0.3 V for less than 30 µs. INVALID\ is low (invalid data) if all receiver input voltages are between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
MAX3243CDB	ACTIVE	0 to 70	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CDBE4	ACTIVE	0 to 70	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CDBG4	ACTIVE	0 to 70	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CDBR	ACTIVE	0 to 70	0.90 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243CDBRE4	ACTIVE	0 to 70	0.90 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243CDBRG4	ACTIVE	0 to 70	0.90 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243CDW	ACTIVE	0 to 70	0.98 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Purchase Samples
MAX3243CDWE4	ACTIVE	0 to 70	0.98 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Purchase Samples
MAX3243CDWG4	ACTIVE	0 to 70	0.98 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Purchase Samples
MAX3243CDWR	ACTIVE	0 to 70	0.88 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R
MAX3243CDWRG4	ACTIVE	0 to 70	0.88 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R
MAX3243CPW	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CPWE4	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CPWG4	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243CPWR	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R
MAX3243CPWRE4	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R
MAX3243CPWRG4	ACTIVE	0 to 70	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R
MAX3243IDB	ACTIVE	-40 to 85	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243IDBE4	ACTIVE	-40 to 85	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243IDBG4	ACTIVE	-40 to 85	0.98 \| 1ku	SSOP (DB) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243IDBR	ACTIVE	-40 to 85	0.88 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243IDBRE4	ACTIVE	-40 to 85	0.88 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243IDBRG4	ACTIVE	-40 to 85	0.88 \| 1ku	SSOP (DB) \| 28	View	2000 \| LARGE T&R
MAX3243IDW	ACTIVE	-40 to 85	0.98 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Purchase Samples
MAX3243IDWG4	ACTIVE	-40 to 85	0.98 \| 1ku	SOIC (DW) \| 28	View	20 \| TUBE	Purchase Samples
MAX3243IDWR	ACTIVE	-40 to 85	0.88 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R
MAX3243IDWRE4	ACTIVE	-40 to 85	0.88 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R
MAX3243IDWRG4	ACTIVE	-40 to 85	0.88 \| 1ku	SOIC (DW) \| 28	View	1000 \| LARGE T&R
MAX3243IPW	ACTIVE	-40 to 85	0.88 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243IPWG4	ACTIVE	-40 to 85	0.88 \| 1ku	TSSOP (PW) \| 28	View	50 \| TUBE	Purchase Samples
MAX3243IPWR	ACTIVE	-40 to 85	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R
MAX3243IPWRE4	ACTIVE	-40 to 85	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R
MAX3243IPWRG4	ACTIVE	-40 to 85	0.88 \| 1ku	TSSOP (PW) \| 28	View	2000 \| LARGE T&R

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 11:43 AM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 18 WeeksMAX3243CDB
Americas	Arrow	3
Asia	WPI	100
TI Lead Time*: 18 WeeksMAX3243CDBE4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243CDBG4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243CDBR
Asia	Farnell Asia	120
	WPI	280
	Wintech	>1k
Europe	Avnet-SILICA	60
	Farnell	80
TI Lead Time*: 18 WeeksMAX3243CDBRE4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243CDBRG4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243CDW
Americas	Arrow	>1k
	Avnet	20
	Newark	228
Asia	Farnell Asia	13
Europe	Farnell	13
Worldwide	DigiKey	Available
	Mouser Electronics	230
TI Lead Time*: 18 WeeksMAX3243CDWE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksMAX3243CDWG4
Worldwide	DigiKey	Available
	Mouser Electronics	945
TI Lead Time*: 18 WeeksMAX3243CDWR
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	953
	Mouser Electronics	318
TI Lead Time*: 18 WeeksMAX3243CDWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksMAX3243CPW
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243CPWE4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243CPWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243CPWR
Asia	Farnell Asia	140
	WPI	8
	Wintech	>1k
Europe	Arrow Northern Europe	6
TI Lead Time*: 20 WeeksMAX3243CPWRE4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243CPWRG4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDB
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDBE4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDBG4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDBR
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDBRE4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDBRG4
None Reported View Distributors
TI Lead Time*: 14 WeeksMAX3243IDW
Americas	Arrow	420
	Avnet	450
	Rochester Electronics	>1k
Asia	WPI	20
Europe	Avnet-SILICA	260
Worldwide	Mouser Electronics	501
TI Lead Time*: 14 WeeksMAX3243IDWG4
Europe	EBV Elektronik	440
TI Lead Time*: 18 WeeksMAX3243IDWR
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDWRE4
None Reported View Distributors
TI Lead Time*: 18 WeeksMAX3243IDWRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243IPW
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243IPWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243IPWR
Americas	Avnet	>1k
Asia	Farnell Asia	72
Europe	Compel	>1k
	Farnell	72
TI Lead Time*: 20 WeeksMAX3243IPWRE4
None Reported View Distributors
TI Lead Time*: 20 WeeksMAX3243IPWRG4
None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
MAX3243CDB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDBE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDBRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CDWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243CPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDBE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDBG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDBRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IDWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IPWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
MAX3243IPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for MAX3243

Datasheet

MAX3243 (Rev. L) (PDF, 483 KB)
18 Mar 2004

Selection Guides

Standard Linear Products Cross-Reference (Rev. D) (PDF, 1169 KB) 32764 views
05 May 2006

Simulation Models

IBIS Model
- MAX3243 IBIS Model (Rev. A) (Multiple File Format) 1062 views
  23 Jan 2004 Read Abstract

Part #	Name	Product Family	Comments
TRS3243E	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection	INTERFACE - RS-232	The device has the SAME FUNCTIONALITY/PINOUT as the compared device but includes enhanced IEC61000-4-2 ESD Protection.
MAX3243E	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV IEC ESD Protection	INTERFACE - RS-232	TI recommends the MAX3243E in new designs. The MAX3243E is an improved direct drop-in replacement for the MAX3243
TRS3243	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection	INTERFACE - RS-232	The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device.
Customers Who Evaluated This Product Also Evaluated...
MAX3243E	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV IEC ESD Protection	INTERFACE-RS-232	TI customers also evaluated this product.
MAX3232	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver	INTERFACE-RS-232	TI customers also evaluated this product.
TRS3243E	3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15-kV IEC ESD Protection	INTERFACE-RS-232	TI customers also evaluated this product.
SN74LVC244A	Octal Buffer/Driver With 3-State Outputs	BUFFERS, DRIVERS AND TRANSCEIVERS-NON-INVERTING BUFFERS AND DRIVERS	TI customers also evaluated this product.
SN74LVC1G08	Single 2-Input Positive-AND Gate	LITTLE LOGIC-LL GATE	TI customers also evaluated this product.
TLV320AIC3104	Low-Power Stereo CODEC with 6 Inputs, 6 Outputs, HP Amp and Enhanced Digital Effects	AUDIO CONVERTER AND CODEC-CODEC	TI customers also evaluated this product.
TPS65053	5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs	POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER	TI customers also evaluated this product.
TPD2E001	Low-Capacitance 2-Channel +/-15 kV ESD-Protection Array for High-Speed Data Interfaces	ESD/EMI Protection-ESD Solutions	TI customers also evaluated this product.
TPS61020	Adjustable, 1.5-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS	TI customers also evaluated this product.
SN74LVC2G04	Dual Inverter	LITTLE LOGIC-LL BUFFER, DRIVER AND TRANSCEIVER	TI customers also evaluated this product.
TPS51116	DDR1, DDR2, DDR3 Switcher and LDO	NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH)	TI customers also evaluated this product.
TS3A44159	0.45-Ohm Quad SPDT Analog Switch Quad-Channel 2:1 Multiplexer/Demultiplexer with Two Controls	SWITCHES AND MULTIPLEXERS-ANALOG SWITCHES/MULTIPLEXERS (less than or equal to 5V)	TI customers also evaluated this product.
ULN2003A	High-Voltage, High-Current Darlington Transistor Arrays	OTHER INTERFACE-PERIPHERAL DRIVERS AND ACTUATORS	TI customers also evaluated this product.

MAX3243 Status: ACTIVE

3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver With +/-15kV ESD (HBM) Protection

See Also

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