TC74ACT157FN

Overview

The TC74ACT157FN is a CMOS Digital Integrated Circuit Silicon Monolithic Quad 2-Channel Multiplexer fabricated with silicon gate and double-layer metal wiring C2MOS technology. It operates within a supply voltage range of 4.5 to 5.5 V and an operating temperature range of -40 to 85 °C. The device features four 2-input digital multiplexers with common select and strobe inputs, achieving high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining low power dissipation. Key electrical parameters include a typical propagation delay time (tpd) of 5.1 ns at VCC = 5 V, a maximum quiescent supply current (ICC) of 8 μA at Ta = 25°C, and symmetrical output impedance capability of |IOH| = IOL = 24 mA (min).

Feature Summary

• High speed operation comparable to Bipolar Schottky TTL.
• Low power dissipation characteristics.
• Compatible with TTL, NMOS, and CMOS output voltage levels.
• Symmetrical output impedance capable of driving transmission lines.

Applications

• Level converter for interfacing TTL or NMOS to High Speed CMOS.
• Digital data routing using common select and strobe inputs.
• Applications requiring balanced propagation delays.

Procurement Notes

Verify the specific package designation JEDEC SOP when ordering, as this variant is not available in Japan. Confirm RoHS compliance status directly with Toshiba Semiconductor and Storage representatives prior to procurement. Ensure design adheres to the specified absolute maximum ratings and operating ranges to maintain reliability. Review the latest Toshiba Semiconductor Reliability Handbook for handling precautions and derating methods before finalizing component selection.

Selection Notes

Select the TC74ACT157FN for designs requiring quad 2-channel multiplexing with ACT logic compatibility. The device supports standard 16-pin surface mount packaging suitable for automated assembly. Consider its input compatibility with various logic families when designing mixed-voltage interfaces. Verify that the required propagation delay and drive strength meet the system timing and load requirements.

Part Context

This component belongs to the TC74ACT series of advanced high-speed CMOS logic devices manufactured by Toshiba Semiconductor and Storage. It utilizes C2MOS technology to deliver performance metrics aligned with Bipolar Schottky TTL standards. The part number suffix 'FN' indicates a specific pin-compatible package configuration designed for surface-mount applications.

Replacement Considerations

The datasheet notes pin and function compatibility with the 74F157. Designers replacing legacy components should verify that the AC logic family specifications align with the existing circuit requirements regarding voltage levels and switching speeds.