MIC5841 Datasheet, PDF (1/7 Pages) Micrel Semiconductor – 8-Bit Serial-Input Latched Drivers

MIC5841/5842
Micrel
MIC5841/5842
8-Bit Serial-Input Latched Drivers
General Description
Using BiCMOS technology, the MIC5841/5842 integrated
circuits were fabricated to be used in a wide variety of
peripheral power driver applications. The devices each have
an eight-bit CMOS shift register, CMOS control circuitry,
eight CMOS data latches, and eight bipolar current-sink
Darlington output drivers.
These two devices differ only in maximum voltage ratings.
The MIC5842 offers premium performance with a minimum
output breakdown voltage rating of 80V (50V sustaining). The
drivers can be operated with a split supply where the negative
supply is down to –20V.
The 500 mA outputs, with integral transient-suppression
diodes, are suitable for use with lamps, relays, solenoids and
other inductive loads.
These devices have improved speed characteristics. With a
5V logic supply, they will typically operate faster than 5 MHz.
With a 12V supply, significantly higher speeds are obtained.
The CMOS inputs are compatible with standard CMOS,
PMOS, and NMOS logic levels. TTL or DTL circuits may
require the use of appropriate pull-up resistors. By using the
serial data output, the drivers can be cascaded for interface
applications requiring additional drive lines.
The MIC5840 family is available in DIP, PLCC, and SOIC
packages. Because of limitations on package power dissipa-
tion, the simultaneous operation of all drivers at maximum
rated current might require a reduction in duty cycle. A
copper-alloy lead frame provides for maximum package
power dissipation.
Features
• 3.3 MHz Minimum Data-Input Rate
• CMOS, PMOS, NMOS, TTL Compatible
• Internal Pull-Up/Pull-Down Resistors
• Low-Power CMOS Logic and Latches
• High-Voltage Current-Sink Outputs
• Output Transient-Protection Diodes
• Single or Split Supply Operation
Ordering Information
Part Number Temperature Range
MIC5841BN
–40°C to +85°C
MIC5841BV
–40°C to +85°C
MIC5841BWM –40°C to +85°C
MIC5842BN
–40°C to +85°C
MIC5842BV
–40°C to +85°C
MIC5842BWM –40°C to +85°C
Package
18-Pin Plastic DIP
20-Pin PLCC
18-Pin Wide SOIC
18-Pin Plastic DIP
20-Pin PLCC
18-Pin Wide SOIC
Functional Diagram
Pin Configuration
CLK
1
SERIAL
DATA IN 3
V_{SS 4}
8-BIT SERIAL-PARALLEL SHIFT REGISTER
LATCHES
SERIAL
6 DATA OUT
V_DD
5
STROBE
7
MOS
Bipolar
OUTPUT ENABLE
8 (ACTIVE LOW)
Sub
19
V_EE
10
18
17
16
15
14
13
12
11
K OUT₁ OUT₂ OUT₃ OUT₄ OUT₅ OUT₆ OUT₇ OUT₈
VEE
CLOCK
1
SUB
2C
SERIAL DATA IN 3
VSS
VDD
4 VSS
5 VDD
SERIAL DATA OUT 6
STROBE 7 ST
OUTPUT ENABLE 8 OE
VEE ₉
SUB
18 OUT1
17 OUT2
16 OUT3
15 OUT4
14 OUT5
13 OUT6
12 OUT7
11 OUT8
10 K
(DIP, SOIC)
7-42
October 1998