Features: `3.3 V to 5 V logic supply range
`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 resistorsApplication·Multiplexed LED displays
·Incandescent lampsPinout
SpecificationsOutput Voltage, VOUT ..................................................50 V
Logic Supply Voltage, VDD..............................................7 V
Input Voltage Range, VIN ..................0.3 V to VDD +0.3 V
Continuous Output Current (each output), IOUT ... 500 mA
Package Power Dissipation, PD
A6821SA/A6821EA......................................................2.1 W
A6821SLW.................................................................. 1.5 W
Operating Temperature Range
Ambient Temperature, TA.........................20°C to +85°C
Storage Temperature, TS .......................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.
- 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
- Multiplexed LED displays
- Incandescent lamps
DescriptionA merged combination of bipolar and MOS technology gives these devices A6821 an interface fl exibility 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 A6821 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.
A6821 Data Sheet
