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74F455 반도체 회로 부품 판매점

Buffers/drivers



Philips 로고
Philips
74F455 데이터시트, 핀배열, 회로
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
Philips
Semiconductors
1999 Jan 08


74F455 데이터시트, 핀배열, 회로
Philips Semiconductors
Buffers/Drivers
Product specification
74F455,* 74F456
74F455 Octal Buffer/Driver with Parity, Inverting (3-State)
74F456 Octal Buffer/Driver with Parity, Non-Inverting (3-State)
FEATURES
High impedance NPN base inputs for reduced loading
(40µA in High and Low states)
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
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.
TYPE
74F455
74F456
TYPICAL
PROPAGATION
DELAY
6.5ns
7.5ns
TYPICAL SUPPLY CURRENT
(TOTAL)
64mA
64mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL
RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
24-pin plastic Slim
DIP (300mil)
N74456N
24-pin plastic SOL
N74456D
PKG DWG #
SOT222-1
SOT137-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
D0–D7
Data inputs
2.0/0.066
PI Parity input
1.0/0.033
OE0, OE1
Output Enable inputs (active Low)
1.0/0.033
ΣE, ΣO
Parity outputs
750/106.7
Q0–Q7
Data outputs (75F455)
750/106.7
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
PIN CONFIGURATION – 74F456
LOAD VALUE
HIGH/LOW
40µA/40µA
20µA/20µA
20µA/20µA
15mA/64mA
15mA/64mA
15mA/64mA
OE0 1
OE1 2
PI 3
D0 4
D1 5
D2 6
VCC 7
D3 8
D4 9
D5 10
D6 11
D7 12
24 ΣO
23 ΣE
22 Q0
21 Q1
20 Q2
19 GND
18 GND
17 Q3
16 Q4
15 Q5
14 Q6
13 Q7
OE0 1
OE1 2
PI 3
D0 4
D1 5
D2 6
VCC 7
D3 8
D4 9
D5 10
D6 11
D7 12
24 ΣO
23 ΣE
22 Q0
21 Q1
20 Q2
19 GND
18 GND
17 Q3
16 Q4
15 Q5
14 Q6
13 Q7
SF00969
SF00958
* Discontinued part. Please see the Discontinued Products List.
1999 Jan 08
2
853–0371 20616




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74F455 driver

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