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5895 Datasheet, PDF (5/8 Pages) Allegro MicroSystems – BiMOS II 8-BIT SERIAL INPUT, LATCHED SOURCE DRIVERS
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5895
8-BIT SERIAL-INPUT,
LATCHED DRIVERS
CLOCK
DATA IN
STROBE
TYPICAL APPLICATION
UCN5895A
+ 12 V
1
16
2
SHIFT
VDD 15
REGISTER
3
OE 14
4
LATCHES VBB 13
5
12
6
11
7
10
8
9
DATA OUT
FOR > 8 SEGMENTS
PER DIGIT
OUTPUT ENABLE
(ACTIVE LOW)
CLOCK
DATA IN
+ 12 V
DATA OUT
STROBE
OUTPUT
ENABLE
UCN5821A
1C
16
2
15
3
14
4
13
5
12
6
11
7
10
8
99
TO OTHER SEGMENTS
TO
OTHER
DIGITS
TRUTH TABLE
Dwg. No. B-1541
Serial
Shift Register Contents
Data Clock
Input Input I1 I2 I3 ... IN-1 IN
Serial
Data Strobe
Output Input
Latch Contents
I1 I2 I3 ... IN-1 IN
Output
Enable
Output Contents
I1 I2 I3 ... IN-1 IN
H
H R1 R2 ... RN-2 RN-1
RN-1
L
L R1 R2 ... RN-2 RN-1
RN-1
X
R1 R2 R3 ... RN-1 RN
RN
X X X ... X X
X
L
R1 R2 R3 ... RN-1 RN
P1 P2 P3 ... PN-1 PN
PN
H
P1 P2 P3 ... PN-1 PN
L
P1 P2 P3 ... PN-1 PN
X X X ... X X
H
L L L ... L L
L = Low Logic Level H = High Logic Level X = Irrelevant P = Present State R = Previous State
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