This data sheet provides detailed information on the features and characteristics of the 74HC/HCT257 chip, including the non-inverting data path, 3-state outputs directly interface with system bus, output capability is bus driver, etc.
The document is a product specification for the 74HC/HCT257 integrated circuit, which consists of four identical 2-input multiplexers with 3-state outputs. These high-speed Si-gate CMOS devices are pin compatible with low power Schottky TTL (LSTTL) and select data from two sources based on a common control input.
| Device Type | Quad 2-input multiplexer; 3-state |
|---|---|
| Technology | high-speed Si-gate CMOS |
| Logic Category | MSI |
| Operating Temperature (HC) | -40 to +85 °C / -40 to +125 °C |
| Operating Temperature (HCT) | -40 to +85 °C / -40 to +125 °C |
| Package Types | DIP16, SO16, SSOP16, TSSOP16 |
Input S selects which source data appears at the outputs. When S is LOW, data from source 0 is selected; when S is HIGH, data from source 1 is selected.
When the output enable input (OE) is HIGH, the outputs are forced into a high impedance OFF-state.