MC74AC157NG

Signal Switches, Multiplexers, Decoders Overview

The MC74AC157NG is a quad 2-input multiplexer manufactured by onsemi in a PDIP-16 package. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an operating temperature range from -40°C to +85°C. The device features outputs capable of sourcing and sinking 24 mA. Propagation delays are specified at 9.0 ns maximum for input-to-output transitions and 10.0 ns maximum for enable-to-output transitions, measured at 5.0 V with a 50 pF load.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides four independent data selection paths controlled by common Select and Enable inputs
• Outputs present selected data in true non-inverted form
• Capable of functioning as a function generator for implementing gating logic

Signal Switches, Multiplexers, Decoders Applications

• Routing data between two groups of registers to common output buses
• Implementing gating functions using the device as a function generator
• General-purpose digital signal switching applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the ordering suffix 'N' corresponds specifically to the PDIP-16 package configuration. Confirm RoHS compliance status via official documentation, as the datasheet indicates Pb-free packages are available but requires specific verification for this part number. Ensure the required lead time aligns with manufacturing schedules.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a through-hole DIP package is required for the quad multiplexer function. Verify that the AC logic family characteristics meet the system's speed requirements. Consider alternative suffixes if surface-mount packaging or different shipping quantities are preferred over the standard rail packaging associated with the N suffix.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the MC74AC157 series, which includes variants such as MC74AC157D (SOIC) and MC74AC157DTR2G (TSSOP). All variants share identical logical functionality and electrical specifications, differing only in physical package type and shipping format. The NG designation indicates a lead-free PDIP-16 construction.

Signal Switches, Multiplexers, Decoders Replacement Considerations

MC74AC157D

Signal Switches, Multiplexers, Decoders FAQ

What is the function of the Enable input?

The Enable input is active-LOW. When HIGH, all outputs are forced LOW regardless of other inputs.

Can this device be used as a function generator?

Yes, it can generate any four of sixteen different functions of two variables with one variable common.