MIC5891
Micrel
MIC5891
8-Bit Serial-Input Latched Source Driver
General Description
The MIC5891 latched driver is a high-voltage, high current
integrated circuit comprised of eight CMOS data latches,
CMOS control circuitry for the common STROBE and OUTPUT
ENABLE, and bipolar Darlington transistor drivers for each
latch.
Bipolar/MOS construction provides extremely low power
latches with maximum interface flexibility.
The MIC5891 will typically operate at 5MHz with a 5V logic
supply.
The CMOS inputs are compatible with standard CMOS,
PMOS, and NMOS logic levels. TTL circuits may be used with
appropriate pull-up resistors to ensure a proper logic-high
input.
A CMOS serial data output allows additional drivers to be
cascaded when more than 8 bits are required.
The MIC5891 has open-emitter outputs with suppression
diodes for protection against inductive load transients. The
output transistors are capable of sourcing 500mA and will
sustain at least 35V in the on-state.
Simultaneous operation of all drivers at maximum rated
current requires a reduction in duty cycle due to package
power limitations. Outputs may be paralleled for higher load
current capability.
The MIC5891 is available in a 16-pin plastic DIP package (N)
and 16-pin wide SOIC package (WM).
Features
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High-voltage, high-current outputs
Output transient protection diodes
CMOS-, PMOS-, NMOS-, and TTL-compatible inputs
5MHz typical data input rate
Low-power CMOS latches
Applications
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Alphanumeric and bar graph displays
LED and incandescent displays
Relay and solenoid drivers
Other high-power loads
Ordering Information
Part Number
MIC5891BN
MIC5891BWM
Temperature Range
鈥?0掳C to +85掳C
鈥?0掳C to +85掳C
Package
16-Pin Plastic DIP
16-pin Wide SOIC
Functional Diagram
CLOCK
SERIAL
DATA IN
8-BIT SERIAL PARALLEL SHIFT REGISTER
Pin Configurations
16 SERIAL
DATA OUT
SHIFT
V
DD
15 LOGIC SUPPLY
REGISTER
OE
SERIAL
DATA OUT
GROUND
CLOCK
1
2
3
4
5
6
7
8
LATCHES
STROBE
GROUND
LATCHES
OUTPUT
ENABLE
MOS
BIPOLAR
SERIAL
DATA IN
STROBE
OUT
1
OUT
2
OUT
3
OUT
4
14
OUTPUT
ENABLE
V
BB
13 LOAD SUPPLY
12 OUT
8
11 OUT
7
10 OUT
6
9
OUT
5
OUT
1
OUT
2
OUT
3
OUT
4
OUT
5
OUT
6
OUT
7
OUT
8
7-54
December 1997
MIC5891相关型号PDF文件下载
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