Details, datasheet, quote on part number: 74F455
CompanyPhilips Semiconductors (Acquired by NXP)
DatasheetDownload 74F455 datasheet
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Features, Applications

* Discontinued part. Please see the Discontinued Product List.
Product specification Supersedes data of 1990 Nov 26 IC15 Data Handbook

74F455 Octal Buffer/Driver with Parity, Inverting (3-State) 74F456 Octal Buffer/Driver with Parity, Non-Inverting (3-State)

High impedance NPN base inputs for reduced loading

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 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

PINS O Q0­Q7 Data inputs Parity input Output Enable inputs (active Low) Parity outputs Data outputs (75F455) DESCRIPTION 74F(U.L.) HIGH/LOW LOAD VALUE HIGH/LOW 20µA/20µA 15mA/64mA

Q0­Q7 Data outputs (75F456) 750/106.7 NOTE: One (1.0) FAST Unit Load (U.L.) is defined 20µA in the High state and 0.6mA in the Low state.

* Discontinued part. Please see the Discontinued Products List. 1999 Jan 08

INPUTS Number of inputs, High (PI, - D7) Even Odd Any OEn = High voltage level Low voltage level High impedance "off" state Don't care OUTPUTS

High voltage level Low voltage level High impedance "off" state Don't care
* Discontinued part. Please see the Discontinued Products List.


Some Part number from the same manufacture Philips Semiconductors (Acquired by NXP)
74F456 74F456; Octal Buffer/driver With Parity, Non-inverting (3-State);; Package: SOT137 (SO24), SOT222-1 (DIP24)
74F50109 74F50109; Synchronizing Dual J-k Positive Edge-triggered Flip-flop With Metastable Immune Characteristics;; Package: SOT109 (SO16), SOT38-4 (DIP16)
74F50728 74F50728; Synchronizing Cascaded Dual Positive Edge-triggered D-type Flip-flop;; Package: SOT108-1 (SO14), SOT27-1 (DIP14)
74F50729 74F50729; Synchronizing Dual D-type Flip-flop With Edge-triggered Set And Reset And Metastable Immune Characteristics;; Package: SOT27-1 (DIP14)
74F5074 74F5074; Synchronizing Dual D-type Flip-flop/clock Driver;; Package: SOT27-1 (DIP14)
74F51 74F51; Dual 2-wide 2-input, 2-wise 3-input And-or-invert Gate;; Package: SOT108-1 (SO14), SOT27-1 (DIP14)
74F521 74F521; 8-bit Identity Comparator;; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F524 74F524; 8-bit Register Comparator (open-collector + 3-State);; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F5300 74F5300; Fiber Optic Led Driver;; Package: SOT96 (SO8), SOT97-1 (DIP8)
74F5302 Fiber Optic Dual Led /clock Driver
74F534 74F534; Octal D Flip-flop, Inverting (3-State);; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F537 74F537; 1-of-10 Decoder (3-State)
74F538 74F538; 1-of-8 Decoder (3-State);; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F539 Dual 1-of-4 Decoder (3-state)
74F540 74F540; 74F541; Octal Inverter Buffer (3- State); Octal Buffer (3- State);; Package: SOT146-1 (DIP20), SOT163-1 (SO20)
74F543 74F543; 74F544; Octal Registered Transceiver, Non-inverting (3-State); Octal Registered Transceiver,inverting (3-State);; Package: SOT137 (SO24), SOT222-1 (DIP24), SOT340-1 (SSOP24)
74F545 74F545; Octal Bidirectional Transceiver (with 3-State Inputs/outputs);; Package: SOT146-1 (DIP20), SOT163 (SO20)
74F552 74F552; Octal Registered Transceiver With Parity And Flags (3-State);; Package: SOT117-1 (DIP28), SOT136-1 (SO28)
74F564 74F564; Octal D Flip-flop (3-State);; Package: SOT146-1 (DIP20), SOT163-1 (SO20)
74F569 74F569; 4-bit Bidirectional Binary Synchronous Counter (3-State)
74F573 74F573; 74F574; Octal Transparent Latch (3-State); Octal Transparent Latch (3-State);; Package: SOT146-1 (DIP20), SOT163 (SO20), SOT339-1 (SSOP20)
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