This document describes a quad 2-input multiplexer called 74HC/HCT158, which has an inverting data path and standard output capability. It can select 4 bits of data from two sources and is controlled by a common data select input (S). The four outputs present the selected data in the inverted form. Moving the data from two groups of registers to four common output buses is a common use of the '158'. It can also be used as a function generator, allowing the implementation of highly irregular logic. The product complies with JEDEC standard 7A.
The Philips 74HC/HCT158 is a high-speed Si-gate CMOS device featuring a quad 2-input multiplexer with inverting outputs. It is pin compatible with low power Schottky TTL (LSTTL) and is specified in compliance with JEDEC standard no. 7A. The device selects 4 bits of data from two sources based on a common data select input, presenting the selected data in an inverted form.
| Output capability | standard |
|---|---|
| IC category | MSI |
| Propagation delay (nlp, nly to nY) | 12 ns (typical) |
| Input capacitance | 3.5 pF |
The device selects four bits of data from two sources.