描述 Description

The 74HC253-Q100; 74HCT253-Q100 are high-speed Si-gate CMOS devices and are pin compatible with Low-power Schottky TTL (LSTTL).
The 74HC253-Q100; 74HCT253-Q100 provides a dual 4-input multiplexer with 3-state outputs which selects 2 bits of data from up to four sources selected by common data select inputs (S0, S1). The two 4-input multiplexer circuits have individual active LOW output enable inputs (1OE, 2OE).
The 74HC253-Q100 and 74HCT253-Q100 are the logic implementation of a 2-pole, 4-position switch, where the position of the switch is determined by the logic levels applied to S0 and S1. The outputs are forced to a high-impedance OFF-state when nOE is HIGH.
The logic equations for the outputs are:
1Y = 1OE
? (1I0
? S1
? S0 + 1I1
? S1
? S0 + 1I2
? S1
? S0 + 1I3
? S1
? S0)
2Y = 2OE
? (2I0
? S1
? S0 + 2I1
? S1
? S0 + 2I2
? S1
? S0 + 2I3
? S1
? S0)
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

特性 Features

? Automotive product qualification in accordance with AEC-Q100 (Grade 1)
? Specified from -40 °C to +85 °C and from -40 °C to +125 °C

? Non-inverting data path
? 3-state outputs interface directly with system bus
? Complies with JEDEC standard no. 7A
? Common select inputs
? Separate output enable inputs
? Input levels:
? For 74HC253-Q100: CMOS level
? For 74HCT253-Q100: TTL level

? ESD protection:
? MIL-STD-883, method 3015 exceeds 2000 V
? HBM JESD22-A114F exceeds 2000 V
? MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)

應用 Application

? Data selectors
? Data multiplexers