A6275

• Up to 90 mA constant-current outputs
• Undervoltage lockout
• Low-power CMOS logic and latches
• High data-input rate
• Pin-compatible with TB62705CP

Description

The A6275 is specifically designed for LED display applications. Each BiCMOS device includes an 8-bit CMOS shift register, accompanying data latches, and eight NPN constant-current sink drivers.

The CMOS shift register and latches A6275 allow direct interfacing with microprocessor-based systems. With a 5 V logic supply, typical serial data-input rates are up to 20 MHz. The LED drive current is de ter mined by the user selection of a single resistor. A CMOS serial data output permits cascade connections in applications requiring additional drive lines. For inter-digit blanking, all output drivers can be disabled with an ENABLE input high. A similar 150 mA output device is available as the A6277; a similar 16-bit device is available as the A6276.

Two package styles of A6275 are provided: a through-hole DIP (suffix A) and a surface-mount SOICW (suffix LW). Under normal applications, copper leadframes and low logic-power dissipation allow these devices to sink maximum rated current through all outputs continuously over the operating temperature range (90 mA, 0.9 V drop, 85°C). Both packages are lead (Pb) free, with 100% matte tin leadframe plating.