ucn5811 Allegro MicroSystems, Inc., ucn5811 Datasheet - Page 4

• Manufacturer Part Number: ucn5811
• Description: Bimos Ii 12-bit Serial-input, Latched Source Drivers
• Manufacturer: Allegro MicroSystems, Inc.

A. Minimum Data Active Time Before Clock Pulse
B. Minimum Data Active Time After Clock Pulse
C. Minimum Data Pulse Width ................................................................ 150 ns
D. Minimum Clock Pulse Width ............................................................... 150 ns
E. Minimum Time Between Clock Activation and Strobe ....................... 300 ns
F. Minimum Strobe Pulse Width ............................................................. 100 ns
G. Typical Time Between Strobe Activation and
Timing is representative of a 3.3 MHz clock. Higher speeds may be attainable
with increased supply voltage; operation at high temperatures will reduce the
specified maximum clock frequency.
BLANKING
Serial
Data
Input Input I
H
L
X
L = Low Logic Level
5811
BiMOS II 12-BIT
SERIAL-INPUT,
LATCHED SOURCE DRIVERS
STROBE
P
DATA IN
CLOCK
N
(Data Set-Up Time) .......................................................................... 75 ns
(Data Hold Time) ............................................................................. 75 ns
Output Transistion ......................................................................... 500 ns
OUT
Clock
N
H
L
R
X
P
1
1
1
Shift Register Contents
I
R
R
R
X
P
2
A
2
1
1
2
H = High Logic Level
C
I
R
R
R
X
P
3
B
3
2
2
3
...
...
...
...
...
...
D
E
I
R
R
R
X
P
N-1
N-1
N-2
N-2
N-1
I
R
R
R
X
P
F
N
N
N-1
N-1
N
G
X = Irrelevant
Output
Serial
Data
R
R
R
X
P
N
N-1
N-1
N
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Strobe
Input
P = Present State
H
L
I
R
P
X
1
Dwg. No. 12,649A
1
1
Latch Contents
I
R
P
X
2
2
2
I
R
P
X
3
R = Previous State
3
3
...
...
...
...
I
R
P
X
N-1
N-1
N-1
R
P
I
X
N
N
N
Blanklng
H
L
I
P
L
1
1
I
P
L
Output Contents
2
2
I
P
L
3
3
... I
... P
... L
N-1
N-1
I
L
N