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參數(shù)資料
| 型號： | 933858990623 |
| 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-013, SOT-137-1, SO-24 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 89K |
| 代理商： | 933858990623 |
Philips Semiconductors
Product specification
74F656A
Octal buffer/driver with parity, non-inverting (3-State)
2
2000 Jun 30
853-0383 24025
FEATURES
Significantly improved AC performance over 74F656
High impedance NPN base input for reduced loading
(40
A in High and Low states)
Ideal in applications where high output drive and light bus loading
are required (IIL is 40A vs. FAST std of 600A)
74F656A combines 74F244 and 74F280A functions in one
package
Non-inverting
3-State outputs sink 64mA and source 15mA
24-pin plastic Slim DIP (300mil) package
Inputs on one side and outputs on the other side simplifies PC
board layout
Combined functions reduce part count and enhance system
performance
Industrial temperature range available (–40°C to +85°C)
DESCRIPTION
The 74F656A 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)
74F656A
6.5ns
64mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
INDUSTRIAL RANGE
VCC = 5V ±10%,
Tamb = –40°C to +85°C
PKG DWG #
24-pin Plastic Slim
DIP (300mil)
N74F656AN
I74F656AN
SOT222-1
24-pin Plastic SOL
N74F656AD
I74F656AD
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, OE2
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.
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