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HD74BC373A Datasheet

Octal D Type Transparent Latches With 3 State Outputs

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HD74BC373A
Octal D Type Transparent Latches With 3 State Outputs
ADE-205-009A(Z)
Rev. 1
March 1993
Description
The HD74BC373A provides high drivability and operation equal to or better than high speed bipolar
standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5
of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight D type latches with
three state outputs in a 20 pin package. When the latch enable input is high, the Q outputs will follow the
D inputs. When the latch enable goes low, data at the D inputs will be retained at the outputs until latch
enable returns high again. When a high logic level is applied to the output control 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.
Features
Input/Output are at high impedance state when power supply is off.
Built in input pull up circuit can make input pins be open, when not used.
TTL level input
Wide operating temperature range input pins
Ta = –40 to + 85°C
Function Table
Inputs
G LE
HX
LH
LH
LL
H : High level
L : Low level
X : Immaterial
Z : High impedance
D
X
L
H
X
Output Q
Z
L
H
No change


Hitachi Power Semiconductor Device Electronic Components Datasheet

HD74BC373A Datasheet

Octal D Type Transparent Latches With 3 State Outputs

No Preview Available !

HD74BC373A
Pin Arrangement
G
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 8Q
18 8D
17 7D
16 7Q
15 6Q
14 6D
13 5D
12 5Q
11 LE
(Top view)
Absolute Maximum Ratings
Item
Symbol
Rating
Unit
Supply voltage
Input diode current
Input voltage
Output voltage
Off state output voltage
Storage temperature
VCC
I IK
VIN
VOUT
VOUT(off)
Tstg
–0.5 to +7.0
±30
–0.5 to +7.5
–0.5 to +7.5
–0.5 to +5.5
–65 to +150
V
mA
V
V
V
°C
Note: 1. The absolute maximum ratings are values which must not individually be exceeded, and
furthermore, no two of which may be realized at the same time.
2


Part Number HD74BC373A
Description Octal D Type Transparent Latches With 3 State Outputs
Maker Hitachi Semiconductor
Total Page 9 Pages
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