A6841ELWTR-20-T Allegro Microsystems Inc, A6841ELWTR-20-T Datasheet - Page 2

• Manufacturer Part Number: A6841ELWTR-20-T
• Description: IC SINK DRIVER 8BIT LATCH 20SOIC
• Manufacturer: Allegro Microsystems Inc
• Type: Low Sider

Specifications of A6841ELWTR-20-T

• Input Type: Parallel/Serial
• Number Of Outputs: 8
• Current - Peak Output: 500mA
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• On-state Resistance: -

Not to scale
Features and Benefits
▪ 3.3 to 5 V logic supply range
▪ Power-on reset (POR)
▪ To 10 MHz data input rate
▪ CMOS, TTL compatible inputs
▪ –40°C operation available
▪ Low-power CMOS logic and latches
▪ Schmitt trigger inputs for improved noise immunity
▪ High-voltage current-sink outputs
▪ Internal pull-up/pull-down resistors
▪ Output transient-protection diodes
▪ Single or split supply operation
Packages:
26185.114I
20-pin SOICW (package LW)
(drop-in replacement for discon-
tinued 18-pin SOIC variants)
GROUND
DATA IN
SERIAL
CLOCK
DABiC-5 8-Bit Serial Input Latched Sink Drivers
18-pin DIP (Package A)
OUT
Functional Block Diagram
1
OUT
SERIAL-PARALLEL SHIFT REGISTER
2
OUT
3
OUT
LATCHES
4
OUT
Description
The merging of low-power CMOS logic and bipolar output
power drivers using the proprietary DABiC-5 fabrication
process permit the A6841 integrated circuits to be used in a
wide variety of peripheral power driver applications. Each
device has an eight-bit CMOS shift register and CMOS
control circuitry, eight CMOS data latches, and eight bipolar
current-sinking Darlington output drivers. The 500 mA,
NPN Darlington outputs, with integral transient-suppression
diodes, are suitable for use with relays, solenoids, and other
inductive loads.
All package variations of the A6841 offer premium performance
with a minimum output-breakdown voltage rating of 50 V (35 V
sustaining). All drivers can be operated with a split supply
where the negative supply is up to –20 V.
The CMOS inputs are compatible with standard CMOS logic
levels. TTL circuits may require the use of appropriate pull-up
resistors. By using the serial data output, drivers can be cascaded
for interface applications requiring additional drive lines.
The A6841 is provided in an 18-pin plastic DIP (suffix A), and
a 20-pin wide-body SOIC (suffix LW) with improved thermal
characteristics compared to the 18-pin SOIC version it replaces
(100% pin-compatible electrically).These devices are lead (Pb)
free, with 100% matte tin plated leadframes.
Applications include:
▪ Relays
▪ Solenoids
▪ Inductive loads
5
OUT
6
OUT
7
OUT
8
K
V
DD
BIPOLAR
SUB
MOS
LOGIC
SUPPLY
SERIAL
DATA OUT
STROBE
OUTPUT ENABLE
(ACTIVE LOW)
VEE or POWER GROUND
VEE or POWER GROUND
A6841