SN54LS244: Octal Buffers And Line Drivers With 3-State Outputs
Product Information
Features
Input Resistance...3 k to 7 k
Input Signal Range...±30 V
Operate From Single 5-V Supply
Built-In Input Hysteresis (Double Thresholds)
Response Control that Provides:
Input Threshold Shifting
Input Noise Filtering
Meet or Exceed the Requirements of TIA/EIA-232-F and ITU Recommendation V.28
Fully Interchangeable With MotorolaTM MC1489 and MC1489A
Motorola is a trademark of Motorola, Incorporated.
Description
These devices are monolithic low-power Schottky quadruple line receivers designed to satisfy the requirements of the standard interface between data-terminal equipment and data-communication equipment as defined by TIA/EIA-232-F. A separate response-control (CONT) terminal is provided for each receiver. A resistor or a resistor and bias-voltage source can be connected between this terminal and ground to shift the input threshold levels. An external capacitor can be connected between this terminal and ground to provide input noise filtering.
The SN55189 and SN55189A are characterized for operation over the full military temperature range of -55°C to 125°C. The MC1489, MC1489A, SN75189, and SN75189A are characterized for operation from 0°C to 70°C.
* 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 11:20 AM GMT, 22 Nov 2009
** 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.
* 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.
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