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74F455

Part Number	74F455
Manufacturer	Philips
Description	Buffers/drivers
Published	May 28, 2005
Detailed Description	www.DataSheet4U.com INTEGRATED CIRCUITS 74F455, 74F456 Buffers/drivers Discontinued part. Please see the Discontinu...
Datasheet	74F455 PDF File

Overview

www.
DataSheet4U.
com INTEGRATED CIRCUITS 74F455*, 74F456 Buffers/drivers * Discontinued part.
Please see the Discontinued Product List.
Product specification Supersedes data of 1990 Nov 26 IC15 Data Handbook 1999 Jan 08 Philips Semiconductors Philips Semiconductors Product specification Buffers/Drivers 74F455 Octal Buffer/Driver with Parity, Inverting (3-State) 74F456 Octal Buffer/Driver with Parity, Non-Inverting (3-State) FEATURES 74F455,* 74F456 • High impedance NPN base inputs for reduced loading (40µA in High and Low states) DESCRIPTION The 74F455 and 74F456 are octal buffers and line drivers with parity generation/checking designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers.
These parts include parity generator/checker to improve PC board density.
TYPICAL PROPAGATION DELAY 6.
5ns 7.
5ns • 74F456 combines 74F244 and 74F280A functions in one package • 74F456 is a center pin version of the 74F656A • 74F456 Non-Inverting • 3-State outputs sink 64mA and source 15mA • 24-pin plastic Slim DIP (300 mil) package • Broadside pinout simplifies PC board layout TYPE 74F455 74F456 TYPICAL SUPPLY CURRENT (TOTAL) 64mA 64mA ORDERING INFORMATION DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74456N N74456D PKG DWG # 24-pin plastic Slim DIP (300mil) 24-pin plastic SOL SOT222-1 SOT137-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS D0–D7 PI OE0, OE1 ΣE, ΣO Q0–Q7 Data inputs Parity input Output Enable inputs (active Low) Parity outputs Data outputs (75F455) DESCRIPTION 74F(U.
L.
) HIGH/LOW 2.
0/0.
066 1.
0/0.
033 1.
0/0.
033 750/106.
7 750/106.
7 LOAD VALUE HIGH/LOW 40µA/40µA 20µA/20µA 20µA/20µA 15mA/64mA 15mA/64mA 15mA/64mA Q0–Q7 Data outputs (75F456) 750/106.
7 NOTE: One (1.
0) FAST Unit Load (U.
L.
) is defined as 20µA in the High state and 0.
6mA in the Low state.
PIN CONFIGURATION – 74F455 OE0 OE1 PI D0 D1 D2 VCC D3 D4 D5 D6 D7 1 2 3 4 5 6 7 8 9 10 11 12 24 ΣO 23 ΣE 22 Q0 21 Q1 20 Q2 19 GND 18 GND 17 Q...

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