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A6821: DABiC-5 8-Bit Serial Input Latched Sink Drivers (PDF)
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A6821
DABiC-5 8-Bit Serial Input Latched Sink Drivers
This device is in production, however, it has been deemed pre-end of life.
Date of status change: May 3, 2010.
For existing customer transition, and for new customers or new applications, refer to your Allegro sales representative.
Features
- 3.3 V to 5 V logic supply range
- Power on reset (POR)
- To 10 MHz data input rate
- CMOS, TTL compatible
- -40C 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
Description
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.
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 surfacemount applications. These devices are lead (Pb) free, with 100% matte tin plated leadframes.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A6821SA-T | 16-pin DIP | Yes | view data | -20 °C to 85 °C | pre-eol |
Contact Local Sales Representative or check distributor stock |
|
| A6821SLWTR-T | 16-lead SOIC | Yes | view data | -20 °C to 85 °C | pre-eol |
Contact Local Sales Representative or check distributor stock |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.