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參數資料
| 型號： | MM54C374J/883B |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 總線收發器 |
| 英文描述： | CMOS SERIES, 8-BIT DRIVER, TRUE OUTPUT, CDIP20 |
| 封裝： | 0.300 INCH, CERAMIC, DIP-20 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 190K |
| 代理商： | MM54C374J/883B |
TLF5906
MM54C373MM74C373
TRI-STATE
Octal
D-Type
Latch
MM54C374MM74C374
TRI-STATE
Octal
D-Type
Flip-Flop
March 1988
MM54C373MM74C373 TRI-STATE
Octal D-Type Latch
MM54C374MM74C374 TRI-STATE Octal D-Type Flip-Flop
General Description
The MM54C373MM74C373 MM54C374MM74C374 are
integrated complementary MOS (CMOS) 8-bit storage ele-
ments with TRI-STATE outputs These outputs have been
specially designed to drive high capacitive loads such as
one might find when driving a bus and to have a fan out of 1
when driving standard TTL When a high logic level is ap-
plied to the OUTPUT DISABLE input all outputs go to a high
impedance state regardless of what signals are present at
the other inputs and the state of the storage elements
The MM54C373MM74C373 is an 8-bit latch When LATCH
ENABLE is high the Q outputs will follow the D inputs
When LATCH ENABLE goes low data at the D inputs
which meets the set-up and hold time requirements will be
retained at the outputs until LATCH ENABLE returns high
again
The MM54C374MM74C374 is an 8-bit D-type positive-
edge triggered flip-flop Data at the D inputs meeting the
set-up and hold time requirements is transferred to the Q
outputs on positive-going transitions of the CLOCK input
Both the MM54C373MM74C373 and the MM54C374
MM74C374 are being assembled in 20-pin dual-in-line pack-
ages with 0300
pin centers
Features
Y
Wide supply voltage range
3V to 15V
Y
High noise immunity
045 VCC (typ)
Y
Low power consumption
Y
TTL compatibility
Fan out of 1
driving standard TTL
Y
Bus driving capability
Y
TRI-STATE outputs
Y
Eight storage elements in one package
Y
Single CLOCKLATCH ENABLE and OUTPUT
DISABLE control inputs
Y
20-pin dual-in-line package with 0300
centers takes
half the board space of a 24-pin package
Connection Diagrams
MM54C373MM74C373
Dual-In-Line Package
TLF5906 – 1
Top View
Order Number MM54C373 or MM74C373
MM54C374MM74C374
Dual-In-Line Package
TLF5906 – 2
Top View
Order Number MM54C374 or MM74C374
TRI-STATE
is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A
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