參數(shù)資料
型號(hào): MC54-74HC373A
廠商: Motorola, Inc.
英文描述: Octal 3-State Non-Inverting Transparent Latch
中文描述: 八路三態(tài)非反相透明鎖存器
文件頁(yè)數(shù): 1/8頁(yè)
文件大?。?/td> 202K
代理商: MC54-74HC373A
SEMICONDUCTOR TECHNICAL DATA
1
REV 7
Motorola, Inc. 1997
3/97
High–Performance Silicon–Gate CMOS
The MC54/74HC373A is identical in pinout to the LS373. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
These latches appear transparent to data (i.e., the outputs change
asynchronously) when Latch Enable is high. When Latch Enable goes low,
data meeting the setup and hold time becomes latched.
The Output Enable input does not affect the state of the latches, but when
Output Enable is high, all device outputs are forced to the high–impedance
state. Thus, data may be latched even when the outputs are not enabled.
The HC373A is identical in function to the HC573A which has the data
inputs on the opposite side of the package from the outputs to facilitate PC
board layout.
The HC373A is the non–inverting version of the HC533A.
Output Drive Capability: 15 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
μ
A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 186 FETs or 46.5 Equivalent Gates
LOGIC DIAGRAM
DATA
INPUTS
D0
D1
D2
D3
D4
D5
D6
D7
18
17
14
13
8
7
4
3
1
OUTPUT ENABLE
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
16
15
12
9
6
5
2
PIN 20 = VCC
PIN 10 = GND
NONINVERTING
OUTPUTS
11
LATCH ENABLE
Internal Gate Count*
* Equivalent to a two–input NAND gate.
46.5
ea
PIN ASSIGNMENT
Q2
D1
D0
Q0
OUTPUT
ENABLE
GND
Q3
D3
D2
Q1
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
Q6
D6
D7
Q7
VCC
LATCH
ENABLE
Q4
D4
D5
Q5
FUNCTION TABLE
Inputs
Latch
Enable
Output
Output
Enable
D
Q
L
L
L
H
H
H
L
X
H
L
X
X
H
L
No Change
Z
X = Don’t Care
Z = High Impedance
DW SUFFIX
SOIC PACKAGE
CASE 751D–04
N SUFFIX
PLASTIC PACKAGE
CASE 738–03
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXADW
MC74HCXXXASD
MC74HCXXXADT
Ceramic
Plastic
SOIC
SSOP
TSSOP
DT SUFFIX
TSSOP PACKAGE
CASE 948E–02
J SUFFIX
CERAMIC PACKAGE
CASE 732–03
1
20
1
20
SD SUFFIX
SSOP PACKAGE
CASE 940C–03
1
20
1
20
1
20
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MC74HC373AN Octal 3-State Non-Inverting Transparent Latch
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