SN75C188DE4

Drivers, Receivers, Transceivers Overview

The SN75C188DE4 is a quadruple low-power line driver manufactured by Texas Instruments, designed to interface data terminal equipment with data communications equipment in accordance with ANSI EIA/TIA-232-E standards. It utilizes Bi-MOS technology for CMOS and TTL compatibility. The device operates within a supply voltage range of ±4.5 V to ±15 V, typically ±12 V. Key electrical parameters include a typical quiescent current of 95 μA at ±12 V, a maximum output slew rate of 30 V/μs, and propagation delays ranging from 0.5 μs to 3.5 μs. It features current-limited outputs with a typical short-circuit current of 10 mA. The component is housed in a 14-pin SOIC (D) package and is characterized for operation between 0°C and 70°C.

Drivers, Receivers, Transceivers Feature Summary

• Complies with ANSI EIA/TIA-232-E and ITU Recommendation V.28 specifications
• Features very low quiescent current consumption for power efficiency
• Includes current-limited outputs to protect against short circuits
• Provides on-chip slew rate limiting to minimize signal reflections

Drivers, Receivers, Transceivers Applications

• Interfacing data terminal equipment with data communications equipment
• Logic translation applications involving TTL, DTL, or CMOS inputs
• RS-232 serial communication line driving

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'E4' corresponds to lead-free packaging and RoHS compliance as indicated in the manufacturer's package option addendum. Confirm that the SOIC (D) tube packaging aligns with assembly requirements. Ensure external diodes are included in the design if fault protection under EIA/TIA-232-E power-off conditions is required.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a quadruple RS-232 driver with low power consumption is needed. It is functionally interchangeable with the SN75188, MC1488, and DS14C88. Consider the ±4.5 V to ±15 V supply flexibility and the 14-pin SOIC footprint during schematic capture. Verify that the 30 V/μs slew rate meets the transmission line requirements of the target application.

Drivers, Receivers, Transceivers Part Context

The SN75C188DE4 belongs to the SN75C188 family of quadruple low-power line drivers. The 'E4' suffix denotes environmental compliance, specifically lead-free construction and adherence to RoHS directives. This variant shares the same functional logic and pinout as the standard SN75C188D but differs in material composition and manufacturing process attributes defined by the manufacturer.

Drivers, Receivers, Transceivers Replacement Considerations

Functionally interchangeable parts include SN75188, MC1488, and DS14C88. For direct replacement within the same manufacturer's portfolio, consider SN75C188D or SN75C188DR depending on the required packaging format.