Data Sheet
26185.112B
A6821
DABiC-5 8-Bit Serial Input Latched Sink Drivers
A merged combination of bipolar and MOS technology gives these
devices an interface flexibility beyond the reach of standard logic
buffers and power driver arrays. Typical applications include driving
multiplexed LED displays or incandescent lamps.
The A6821 has an eight-bit CMOS shift register and CMOS control
circuitry, eight CMOS data latches, and eight bipolar current-sinking
Darlington output drivers.
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, the drivers can be cascaded for interface
applications requiring additional drive lines.
Package LW
16-pin Wide Body SOIC
The A6821SA is furnished in a standard 16-pin plastic DIP. The
A6821EA is a 16-pin plastic DIP, capable of operation from -40°C to
+85°C. The A6821SLW is a 16-lead wide-body SOIC, for surface-
mount applications. These devices are lead (Pb) free, with 100% matte
tin plated leadframes.
Package A
16-pin DIP
FEATURES
3.3 V to 5 V logic supply range
ABSOLUTE MAXIMUM RATINGS
Output Voltage, V
OUT
.........................................50
V
Logic Supply Voltage, V
DD
...................................7
V
Input Voltage Range, V
IN
..............–0.3
V to V
DD
+0.3 V
Continuous Output Current (each output), I
OUT
...
500 mA
Package Power Dissipation, P
D
A6821SA/A6821EA..................................2.1
W
A6821SLW...............................................
1.5 W
Operating Temperature Range
Ambient Temperature, T
A
............–20°C
to +85°C
Storage Temperature, T
S
..........–55°C
to +150°C
Caution: CMOS devices have input-static protection,
but are susceptible to damage when exposed to
extremely high static-electrical charges.
Power on reset (POR)
To 10 MHz data input rate
CMOS, TTL compatible
–40°C operation available
Schmitt trigger inputs for improved
noise immunity
Low-power CMOS logic and latches
High-voltage current-sink outputs
Internal pull-up/pull down resistors
APPLICATIONS
Multiplexed LED displays
Incandescent lamps
Use the following complete part numbers when ordering:
Part Number
A6821SA-T
A6821EA-T
A6821SLW-T
Package
16-pin DIP
16-pin DIP
16-pin wide body SOIC
Ambient
–20ºC to +85ºC
–40ºC to +85ºC
–20ºC to +85ºC
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