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參數(shù)資料
| 型號(hào)： | 933858070112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | F/FAST SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO24 |
| 封裝： | 7.50 MM, PLASTIC, MS-013AD, SOT-137-1, SO-24 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大小： | 87K |
| 代理商： | 933858070112 |
Philips Semiconductors
Product specification
74F456
Octal buffer/driver with parity, non-inverting (3-State)
2
2000 Aug 01
853–0371 24250
FEATURES
High impedance NPN base inputs for reduced loading
(40
A in High and Low states)
74F456 combines 74F244 and 74F280A functions in one package
74F456 is a center pin version of the 74F656A
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 74F456 is an octal buffer and line driver 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
TYPICAL
PROPAGATION
DELAY
TYPICAL SUPPLY CURRENT
(TOTAL)
74F456
7.5ns
64mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL
RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
PKG DWG #
24-pin plastic Slim
DIP (300mil)
N74F456N
SOT222-1
24-pin plastic SOL
N74F456D
SOT137-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
D0–D7
Data inputs
2.0/0.066
40
A/40A
PI
Parity input
1.0/0.033
20
A/20A
OE0, OE1
Output Enable inputs (active Low)
1.0/0.033
20
A/20A
ΣE, ΣO
Parity outputs
750/106.7
15mA/64mA
Q0–Q7
Data outputs
750/106.7
15mA/64mA
NOTE: One (1.0) FAST Unit Load (U.L.) is defined as 20
A in the High state and 0.6mA in the Low state.
PIN CONFIGURATION
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
OE0
OE1
PI
D0
D1
D2
D3
D4
D5
D6
D7
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
ΣE
ΣO
GND
VCC
SF00958
LOGIC SYMBOL
D0
D1
D2
D3
D4
D5
D6
D7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
OE0
OE1
PI
ΣE
ΣO
4
5689
10
11
12
23
24
1
2
3
22
21
20
17
16
15
14
13
SF00960
VCC = Pin 7
GND = Pin 18, 19
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