A6841 Ó¢ÎÄ×ÊÁÏ

A6841
DABiC-5 8-Bit Serial Input Latched Sink Drivers

Features

• 3.3 V to 5 V logic supply range
• Power-on reset (POR)
• To 10 MHz data input rate
• CMOS, TTL compatible inputs
• -40¡ãC 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

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 ¨C20 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.

Functional Block Diagram