This document describes the features and characteristics of the FCT157T, FCT257T/FCT2257T high-speed quad 2-input multiplexers produced by Integrated Device Technology, Inc. It also discusses their applications in data transfer and function generation.
The IDT quad 2‑input multiplexers are fast CMOS devices that select one of two 4‑bit data sources using a common select input. They are offered in several speed grades and package types, and are qualified for both commercial and military applications. Typical applications include data bus multiplexing and function generation.
The document lists electrical characteristics such as low input leakage, high‑drive output currents, propagation delays, and power consumption, as well as mechanical data like available DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages. Temperature ranges cover –55 °C to +125 °C for military parts and 0 °C to +70 °C for commercial parts.
| Input leakage current | <1 µA (max.) |
|---|---|
| Typical VOH | 3.3 V |
| Typical VOL | 0.3 V |
| High‑drive output current (FCT157T) | -15 mA IOH, 48 mA IOL |
| Resistor‑output current (FCT2257T) | -12 mA IOH, 12 mA IOL |
| Commercial temperature range | 0 °C to +70 °C |
| Military temperature range | –55 °C to +125 °C |
| Power dissipation (PT) | 0.5 W |
The devices have low input and output leakage of less than 1 µA (max.).
The FCT157T provides high‑drive outputs of –15 mA (IOH) and 48 mA (IOL).
They are offered in DIP, SOIC, SSOP, QSOP, CERPACK and LCC packages.