FCT157T

Features:

• Function, pinout, and drive compatible with FCT and F logic
• FCT-C speed at 4.3 ns max. (Com'l),FCT-A speed at 5.0 ns max. (Com'l)
• Reduced VOH (typically = 3.3V) versions of equivalent FCT functions
• Edge-rate control circuitry for significantly improved noise characteristics
• Power-off disable feature
• Matched rise and fall times
• Fully compatible with TTL input and output logic levels
• ESD > 2000V
• Extended commercial range of -40°C to +85°C
• Sink current 64 mA (Com'l),32 mA (Mil) Source current 32 mA (Com'l),12 mA (Mil)


Pinout

Specifications

Storage Temperature .....................................-65°C to +150°C
Ambient Temperature with
Power Applied .................................................-65°C to +135°C
Supply Voltage to Ground Potential........................-0.5V to +7.0V
DC Input Voltage ...................................................-0.5V to +7.0V
DC Output Voltage .................................................-0.5V to +7.0V
DC Output Current (Maximum Sink Current/Pin) ................120 mA
Power Dissipation ..................................................................0.5W
Static Discharge Voltage.....................................................>2001V


Description

The FCT157T is a quad two-input multiplexer that selects four bits of data from two sources under the control of a common data Select input (S). The Enable input (E) is Active LOW. When (E) is HIGH, all of the outputs (Y) are forced LOW regardless of all other input conditions.
Moving data from two groups of registers to four common output buses is a common use of the FCT157T. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.
The device is useful for implementing highly irregular logic by generating any four of the sixteen different functions of two variables with one variable common.
The FCT157T is a logic implementation of a four-pole,two-position switch where the position of the switch is determined by the logic levels supplied to the Select input.
The outputs are designed with a power-off disable feature to allow for live insertion of boards.