DS34C87TM

Overview

The DS34C87TM is a CMOS quad differential line driver designed for digital data transmission over balanced lines. It meets EIA standard RS-422 requirements while maintaining low power consumption. The device accepts TTL or CMOS input levels and translates them to RS-422 output levels. It features tri-state outputs that do not load the bus when VCC is 0V, allowing individual drivers to power down without affecting system buses. Separate enable circuitry controls each pair of the four drivers. The component operates from a single 5V supply with a voltage range of 4.5V to 5.5V. Typical propagation delays are 6 ns, with a typical output skew of 0.5 ns. Quiescent current is typically 500 uA at VCC = 5V.

Feature Summary

• TTL and CMOS input compatible logic levels
• Tri-state outputs prevent bus loading during power-down conditions
• Separate enable control for paired drivers
• Built-in electrostatic discharge protection on inputs

Applications

• Serial communication interfaces
• Terminal interface systems
• RS-422 compliant data transmission networks

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and environmental compliance. Confirm active status or lifecycle stage prior to design implementation. Ensure the selected variant matches the required thermal and mechanical specifications for the target application environment.

Selection Notes

Select this component for applications requiring RS-422 differential signaling with low power consumption. Verify that the operating temperature range of -40°C to +85°C aligns with system requirements. Ensure the 5V supply voltage is stable within the specified 4.5V to 5.5V limits for proper logic level translation and signal integrity.

Part Context

The DS34C87TM belongs to the DS34C87T series of quad differential line drivers manufactured by Texas Instruments. It is pin-compatible with the DS3487T. The device is available in surface-mount packages such as SOIC-16. It is designed to provide high-speed data transmission capabilities while adhering to standard RS-422 electrical specifications.

Replacement Considerations

DS34C87TM/NOPB is the lead-free and RoHS-compliant version of the DS34C87TM. Both parts share identical electrical characteristics and pinouts. Verify packaging differences if transitioning between tube and tape-and-reel formats.