SN75LBC241 LOW-POWER LinBiCMOS

SLLS137D - MAY 1992 - REVISED MAY 1995

features

Operates With Single 5-V Power Supply
Meets or Exceeds the Requirements of ANSI Standard EIA/TIA-232-E and ITU Recommendation V.28
Improved Performance Replacement for MAX241
Operate at Data Rates Up to 100 kbs Over a 3-Meter Cable
Low-Power Shutdown Mode: <=1 uA Typ
LinBiCMOS^TM Process Technology
Four Drivers and Five Receivers
±30-V Input Levels
3-State TTL/CMOS Receiver Outputs
±9-V Output Swing With a 5-V Supply
Applications - EIA/TIA-232-E Interface - Battery-Powered Systems - Terminals - Modems - Computers
^{^{[dagger]Patent Pending. LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.}}

description

The SN75LBC241^{^[dagger]} is a low-power LinBiCMOS^TM line interface device containing four independent drivers and five receivers. It is designed to provide a plug-in replacement for the Maxim MAX241. The SN75LBC241 provides a capacitive charge-pump voltage generator to produce EIA/TIA-232 voltage levels from a 5-V supply. The charge-pump oscillator frequency is 20 kHz. Each receiver converts EIA/TIA-232 inputs to 5-V TTL/CMOS levels. The receivers have a typical threshold of 1.2 V and a typical hysteresis of 0.5 V, and can accept ±30-V inputs. Each driver converts TTL/CMOS input levels into EIA/TIA-232 levels.

The SN75LBC241 includes a receiver, 3-state control line and a low-power shutdown control line. Whenever the EN\ line is high, the receiver outputs are placed in a high-impedance state. When EN\ is low, normal operation is enabled.

The shutdown mode reduces power dissipation to less than 5 uW typically. In this mode, receiver outputs have high impedance, driver outputs are turned off, and the charge-pump circuit is turned off. When SHUTDOWN is high, the shutdown mode is enabled. When SHUTDOWN is low, normal operation is enabled.

This device has been designed to conform to ANSI Standard EIA/TIA-232-E and ITU Recommendation V.28 specifications.

The SN75LBC241 has been designed using LinBiCMOS^TM technology and cells contained in the TI's LinASIC^TM library. Use of LinBiCMOS^TM circuitry increases latch-up immunity in this device over an all-CMOS design.

The SN75LBC241 is characterized for operation from 0°C to 70°C.

Title: LOW-POWER LINBICMOS MULTIPLE DRIVERS AND RECEIVERS
Product Family: TRANSMITTERS AND RECEIVERS
Device Functionality: TRANSMITTERS/RECEIVERS
Orderable Devices: SN75LBC241DW

View the complete PDF datasheet: slls137d.pdf (121 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN75LBC241

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