The 74HC/HCT258 is a high-speed Si-gate CMOS device with 3-state outputs that can interface directly with the system bus and has a bus driver output capacity.
This document is a product specification datasheet for the Philips 74HC/HCT258 integrated circuit. It describes a high-speed Si-gate CMOS device featuring four identical 2-input multiplexers with 3-state outputs. The device is pin compatible with Low power Schottky TTL (LSTTL) and is specified in compliance with JEDEC standard no. 7A.
| Output capability | bus driver |
|---|---|
| Icc category | MSI |
| Input capacitance | 3.5 pF |
It is the logic implementation of a 4-pole, 2-position switch where the position is determined by the logic levels applied to S.
Yes, data appears at the outputs in inverted form from the select inputs.
The outputs are forced to a high impedance OFF-state.