SN74AHCT157DG4

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT157DG4 is a quad data selector manufactured by Texas Instruments, belonging to the AHC logic family. It features four independent 2-input to 1-output multiplexers controlled by a common select input and output enable. The device operates within a supply voltage range of 2 V to 5.5 V and supports through-hole mounting in a 16-pin PDIP package. It exhibits a propagation delay of 7.5 ns and functions reliably across an industrial temperature range from -40°C to +125°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Contains four independent 2-line to 1-line data selectors with a common select input
• Features low power consumption compatible with standard CMOS outputs
• Includes latch-up performance exceeding 250 mA per JESD 78 specification

Signal Switches, Multiplexers, Decoders Applications

• Data routing in digital systems
• Signal selection for microprocessor interfaces
• Multiplexing control signals

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'DG4' against the manufacturer's current product status documentation to confirm active manufacturing or lifecycle stage. Ensure the PDIP-16 package type matches the target PCB footprint requirements. Cross-reference the datasheet revision date to validate electrical characteristics against the design specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad 2-to-1 multiplexer is required with TTL-compatible inputs due to the 'T' designation. It serves as a direct pin-compatible replacement for older 74LS157 designs while offering improved speed and lower power consumption. Verify that the 5V logic level compatibility aligns with the system's signal standards.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHC157 series of high-speed CMOS logic devices. The 'T' suffix indicates TTL-compatible input thresholds, distinguishing it from the standard AHC variant. The 'DG4' suffix typically denotes a specific lead-free or environmental compliance packaging option within the PDIP-16 form factor.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct functional equivalents include the SN74AHC157N and SN74AHC157DGVR. For automotive applications, consider the SN74AHC157QPWRQ1. Verify package dimensions and thermal characteristics when substituting between DIP and surface-mount variants.