TL16C2752 Status: ACTIVE

1.8-V to 5-V Dual UART with 64-Byte FIFOs

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Datasheet

1.8-V to 5-V Dual UART With 64-Byte FIFOs (Rev. A) (PDF 425 KB)
29 Sep 2008

	TL16C2752	TL16C750	TL16C752C	TL16C754C
Number of Channels	2	1	2	4
FIFOs(bytes)	64	64	64	64
Operating Voltage(V)	1.8, 2.5,3.3,5	3.3,5	1.8,2.5,3.3,5	1.8, 2.5,3.3,5
Operating Temp Range(Celsius)	-40 to 85,0 to 70		-40 to 85,0 to 70	-40 to 85,0 to 70
Pin/Package	44PLCC	44PLCC, 64LQFP	32QFN, 48TQFP	64LQFP
Rating	Catalog	Catalog	Catalog	Catalog
Tx / Rx FIFO INT Trig	Prog. / Prog.	No / 4 Levels	Prog. / Prog.	Prog. / Prog.
Auto RTS/CTS	Yes	Yes	Yes	Yes
CPU Interface	X86	X86	X86	X86
Baud Rate (max) at Vcc = 1.8V and with 16X Sampling(Mbps)	1.0	N/A	1.0	1.0
Baud Rate (max) at Vcc = 2.5V and with 16X Sampling(Mbps)	1.5	N/A	1.5	1.5
Baud Rate (max) at Vcc = 3.3V and with 16X Sampling(Mbps)	2.0	0.875	2.0	2.0
Baud Rate (max) at Vcc = 5.0V and with 16X Sampling(Mbps)	3.0	1.0	3.0	3.0
	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

TL16C754C: Quad UART with 64-Byte FIFO
TL16C2550: 1.8-V to 5-V Dual UART with 16-Byte FIFOs
TPS2041B: Single-Channel Current-Limited Power Distribution Switch
TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

Product Information

Features

Larger FIFOs Reduce CPU Overhead
Programmable Auto-RTS and Auto-CTS
In Auto-CTS Mode, CTS Controls the Transmitter
In Auto-RTS Mode, RCV FIFO Contents, and Threshold Control RTS
Serial and Modem Control Outputs Drive a RJ11 Cable Directly When Equipment is on the Same Power Drop
Capable of Running With All Existing TL16C450 Software
After Reset, All Registers Are Identical to the TL16C450 Register Set
Up to 48-MHz Clock Rate for up to 3-Mbps (Standard 16× Sampling) Operation, or up to
6-Mbps (Optional 8× Sampling) Operation With V_CC = 5 V Nominal
Up to 32-MHz Clock Rate for up to 2-Mbps (Standard 16× Sampling) Operation, or up to
4-Mbps (Optional 8× Sampling) Operation With V_CC = 3.3 V Nominal
Up to 24-MHz Clock Rate for up to 1.5-Mbps (Standard 16× Sampling) Operation, or up to
3-Mbps (Optional 8× Sampling) Operation With V_CC = 2.5 V Nominal
Up to 16-MHz Clock Rate for up to 1-Mbps (Standard 16× Sampling) Operation, or up to 2-Mbps (Optional 8× Sampling) Operation With V_CC = 1.8 V Nominal
In TL16C450 Mode, Hold and Shift Registers Eliminate the Need for Precise Synchronization Between the CPU and Serial Data
Programmable Baud-Rate Generator Allows Division of Any Input Reference Clock by 1 to (2¹⁶ – 1) and Generates an Internal 16× Clock
Standard Asynchronous Communication Bits (Start, Stop, and Parity) Added to or Deleted From the Serial Data Stream
5-V, 3.3-V, 2.5-V, and 1.8-V Operation
Independent Receiver Clock Input
Transmit, Receive, Line Status, and Data Set Interrupts Independently Controlled
Fully Programmable Serial Interface Characteristics
- 5-, 6-, 7-, or 8-Bit Characters
- Even-, Odd-, or No-Parity Bit Generation and Detection
- 1-, 1 =-, or 2-Stop Bit Generation
- Baud Generation (DC to 1 Mbit/s)
False-Start Bit Detection
Complete Status Reporting Capabilities
3-State Output TTL Drive Capabilities for Bidirectional Data Bus and Control Bus
Line Break Generation and Detection
Internal Diagnostic Capabilities
- Loopback Controls for Communications Link Fault Isolation
- Break, Parity, Overrun, and Framing Error Simulation
Fully Prioritized Interrupt System Controls
Modem Control Functions (CTS, RTS, DSR, DTR, RI, and DCD)
Available in 44-Pin PLCC (FN) or 32-Pin QFN (RHB) Packages
Each UART’s Internal Register Set May Be Written Concurrently to Save Setup Time
Multifunction (MF) Output Allows Users to Select Among Several Functions, Saving Package Pins
APPLICATIONS
- Point-of-Sale Terminals
- Gaming Terminals
- Portable Applications
- Router Control
- Cellular Data
- Factory Automation

Description

The TL16C2752 is a speed and functional upgrade of the TL16C2552. Since they are pinout and software compatible, designs can easily migrate from the TL16C2552 to the TL16C2752 if needed. The additional functionality within the TL16C2752 is accessed via an extended register set. Some of the key new features are larger receive and transmit FIFOs, embedded IrDA encoders and decoders, RS-485 transceiver controls, software flow control (Xon/Xoff) modes, programmable transmit FIFO thresholds, extended receive and transmit threshold levels for interrupts, and extended receive threshold levels for flow control halt/resume operation.

The TL16C2752 is a dual universal asynchronous receiver and transmitter (UART). It incorporates the functionality of two independent UARTs: each UART having its own register set and transmit and receive FIFOs. The two UARTs share only the data bus interface and clock source, otherwise they operate independently. Another name for the UART function is asynchronous communications element (ACE), and these terms will be used interchangeably. The bulk of this document describes the behavior of each ACE, with the understanding that two such devices are incorporated into the TL16C2752.

Functionally equivalent to the TL16C450 on power up or reset (single character or TL16C450 mode), each ACE can be placed in an alternate FIFO mode. This relieves the CPU of excessive software overhead by buffering received and to-be-transmitted characters. Each receiver and transmitter store up to 64 bytes in their respective FIFOs, with the receive FIFO including three additional bits per byte for error status. In the FIFO mode, selectable hardware or software autoflow control features can significantly reduce program overload and increase system efficiency by automatically controlling serial data flow.

Each ACE performs serial-to-parallel conversions on data received from a peripheral device or modem and stores the parallel data in its receive buffer or FIFO, and each ACE performs parallel-to-serial conversions on data sent from its CPU after storing the parallel data in its transmit buffer or FIFO. The CPU can read the status of either ACE at any time. Each ACE includes complete modem control capability and a processor interrupt system that can be tailored to the application.

Each ACE includes a programmable baud rate generator capable of dividing a reference clock with divisors of from 1 to 65535, thus producing a 16× or 8× internal reference clock for the transmitter and receiver logic. Each ACE accommodates up to a 3-Mbaud serial data rate (48-MHz input clock). As a reference point, that speed would generate a 333-ns bit time and a 3.33-=s character time (for 8,N,1 serial data), with the internal clock running at 48 MHz and 16× sampling.

Each ACE has a TXRDY and RXRDY (via MF) output that can be used to interface to a DMA controller.

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
TL16C2752FN	ACTIVE	0 to 70	3.85 \| 1ku	PLCC (FN) \| 44	View	26 \| TUBE
TL16C2752FNG4	ACTIVE	0 to 70	3.85 \| 1ku	PLCC (FN) \| 44	View	26 \| TUBE
TL16C2752FNR	ACTIVE	0 to 70	3.50 \| 1ku	PLCC (FN) \| 44	View	1000 \| LARGE T&R	Purchase Samples
TL16C2752FNRG4	ACTIVE	0 to 70	3.50 \| 1ku	PLCC (FN) \| 44	View	1000 \| LARGE T&R			Purchase Samples
TL16C2752IFN	ACTIVE	-40 to 85	4.05 \| 1ku	PLCC (FN) \| 44	View	26 \| TUBE
TL16C2752IFNG4	ACTIVE	-40 to 85	4.05 \| 1ku	PLCC (FN) \| 44	View	26 \| TUBE
TL16C2752IFNR	ACTIVE	-40 to 85	3.70 \| 1ku	PLCC (FN) \| 44	View	1000 \| LARGE T&R	Purchase Samples
TL16C2752IFNRG4	ACTIVE	-40 to 85	3.70 \| 1ku	PLCC (FN) \| 44	View	1000 \| LARGE T&R			Purchase Samples

* 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 10:36 AM GMT, 08 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 4 WeeksTL16C2752FN
Asia	WPI	106
Europe	EBV Elektronik	52
Worldwide	DigiKey	257
TI Lead Time*: 4 WeeksTL16C2752FNG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTL16C2752FNR
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTL16C2752FNRG4
Worldwide	DigiKey	Available
TI Lead Time*: 4 WeeksTL16C2752IFN
Asia	WPI	6
Europe	Avnet-SILICA	16
Europe	EBV Elektronik	13
Worldwide	DigiKey	278
TI Lead Time*: 4 WeeksTL16C2752IFNG4
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTL16C2752IFNR
Worldwide	DigiKey	Available
TI Lead Time*: 16 WeeksTL16C2752IFNRG4
Worldwide	DigiKey	Available
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
TL16C2752FN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752FNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752FNR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752FNRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752IFN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752IFNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752IFNR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	View	View
TL16C2752IFNRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-3-260C-168 HR	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 TL16C2752

Datasheet

1.8-V to 5-V Dual UART With 64-Byte FIFOs (Rev. A) (PDF, 425 KB)
29 Sep 2008

More Literature

UART Quick Reference Card (Rev. D) (PDF, 165 KB) 7411 views
09 Apr 2008

View More Literature for UARTs

Simulation Models

IBIS Model
- TL16C2752FN IBIS 33V Model (Rev. A) (Multiple File Format) 121 views
  09 Jul 2007 Read Abstract
- TL16C2752FN IBIS 25V Model (Rev. A) (Multiple File Format) 100 views
  09 Jul 2007 Read Abstract
- TL16C2752FN IBIS 5V Model (Rev. A) (Multiple File Format) 107 views
  09 Jul 2007 Read Abstract

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TL16C754C	Quad UART with 64-Byte FIFO	INTERFACE-UARTS	TI customers also evaluated this product.
TL16C2550	1.8-V to 5-V Dual UART with 16-Byte FIFOs	INTERFACE-UARTS	TI customers also evaluated this product.
TPS2041B	Single-Channel Current-Limited Power Distribution Switch	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
TPS61040	28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications	LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS	TI customers also evaluated this product.

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TL16C2752 Status: ACTIVE

1.8-V to 5-V Dual UART with 64-Byte FIFOs

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