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Fairchild Semiconductor Electronic Components Datasheet

DM9374 Datasheet

7-Segment Decoder/Driver/Latch

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March 1989
Revised March 2000
DM9374
7-Segment Decoder/Driver/Latch
with Constant Current Sink Outputs
General Description
The DM74 is a 7-segment decoder driver incorporating
input latches and output circuits to directly drive common
anode LED displays.
Ordering Code:
Order Number Package Number
Package Description
DM9374N
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Connection Diagram
Logic Symbol
Pin Descriptions
VCC = Pin 16
GND = Pin 8
Pin
Names
A0–A3
LE
RBI
RBO
a –g
Description
Address (Data Inputs)
Latch Enable Input (Active LOW)
Ripple Blanking Input (Active LOW)
Ripple Blanking as Output (Active LOW)
as Input (Active LOW)
Constant Current Outputs (Active LOW)
© 2000 Fairchild Semiconductor Corporation DS010210
www.fairchildsemi.com
http://www.Datasheet4U.com


Fairchild Semiconductor Electronic Components Datasheet

DM9374 Datasheet

7-Segment Decoder/Driver/Latch

No Preview Available !

Truth Table
Binary
State
0
0
1
LE
H
L
L
L
Inputs
Outputs
RBI
(Note 1)
L
H
X
A3 A2 A1 A0 a b c d e f g
XXXX
STABLE
L L L L HHHHHHH
L L L L LLLLLLH
L L L H HL LHHHH
RBO
H
L
H
H
Display
Stable
Blank
0
1
2L
X
L L H L L LHL LHL
H
3L
X
L L H H L L L LHHL
H
4L
X
L H L L HL LHHL L
H
5L
X
L H L H LHLLHLL
H
2
3
4
5
6L
X
L H H L LHLLLLL
H
7L
X
L H H H L L LHHHH
H
8L
X
H L L L LLLLLLL
H
9L
X
H L L H LLLLHLL
H
10 L
X
H L H L HHHHHHL
H
6
7
8
9
11 L
X
H L H H LHHL L L L
H
12 L
X
H H L L HLLHLLL
H
13 L
X
H H L H HHHL L LH
H
14 L
X
H H H L L LHHL L L
H
15 L
X
H H H H HHHHHHH
H
X X X X X X X H H H H H H H L (Note 2)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Note 1: The RBI will blank the display only if a binary zero is stored in the latches.
Note 2: RBO used as an input overrides all other input conditions.
E
H
L
P
BLANK
BLANK
Numerical Designations
www.fairchildsemi.com
2
http://www


Part Number DM9374
Description 7-Segment Decoder/Driver/Latch
Maker Fairchild Semiconductor
Total Page 8 Pages
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