74HC251

74HC251, high-speed Si-gate CMOS device, SOIC14, 15ns, 3.5pF, 44pF

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PartNumber:: 74HC251

Brand:: NXP Semiconductors - nxp | Pack: SOIC | D/C: 12+

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Products Upload time: 2012-10-28

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Product Summary

The 74HC251 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). The 74HC251 is specified in compliance with JEDEC standard no. 7A. The 74HC251 is the logic implementations of single-pole 8-position switches with the state of three select inputs (S0, S1, S2) controlling the switch positions. Assertion (Y) and negation (Y) outputs are both provided. The output enable input (OE) is active LOW. Both outputs are in the high impedance OFF-state (Z) when the output enable input is HIGH, allowing multiplexer expansion by tying the outputs.

Parametrics

74HC251 quick reference data: (1) propagation delay (CL = 15pF; VCC = 5V) In to Y: 15ns, in toY: 17ns, Sn to Y: 20ns, Sn toY: 21ns; (2) input capacitance: 3.5pF; (3) power dissipation capacitance per package: 44pF.

Features

74HC251 features: (1) True and complement outputs; (2) both outputs are 3-state for further multiplexer expansion; (3) Multifunction capability; (4) Permits multiplexing from n-lines to one line; (5) Output capability: standard; (6) ICC category: MSI.