SN74AS153N

Overview

The SN74AS153N is a dual 1-of-4 data selector/multiplexer from the AS-TTL series. It contains inverters and drivers to supply full binary decoding data selection to AND-OR gates. The device features two independent 4-line sections with common select inputs A and B, and separate strobe (G) inputs for each section. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range of 0 °C to 70 °C.

Feature Summary

• Contains dual 1-of-4 data selectors/multiplexers with internal binary decoding logic
• Features separate strobe (enable) lines for cascading applications
• Provides full binary decoding data selection to AND-OR gates

Applications

• Multiplexing from n lines to one line
• Parallel-to-serial conversion
• Cascading configurations for n lines to n lines

Procurement Notes

Verify that the component matches the SN74AS153N designation specifically, as other variants like SN74ALS153 or SN54ALS153 exist with different electrical characteristics. Confirm the package type is PDIP-16 and check RoHS compliance status in the latest packaging addendum. Ensure the supplier provides documentation confirming the AS-TTL technology level rather than ALS.

Selection Notes

Select this part when high-speed multiplexing is required compared to standard TTL or LS families. Verify that the 0 °C to 70 °C commercial temperature range meets system requirements. Consider the AS-TTL power consumption profile against available cooling. Ensure the 48 mA low-level output current capability is sufficient for the connected load capacitance and fan-out requirements.

Part Context

This component belongs to the Texas Instruments SN74AS series, representing Advanced Schottky TTL logic. It is functionally related to the SN74ALS153 but offers faster switching speeds. The SN54ALS153 serves as the military-grade counterpart with extended temperature capabilities. The SN74AS253A is noted as a 3-state version of these parts.

Replacement Considerations

SN74ALS153N