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> UCN5818A vacuum-fluorescent display driver ic - rare
UCN5818A vacuum-fluorescent display driver ic - rare
Sprague UCN5818A or rather UCN5818AF
BiMOS II 32-Bit Serial-Input, Latched Source Drivers with Active-DMOS Pull-Downs
Low-Output Saturation Voltages
Low-Power CMOS Logic and Latches
Reduced Supply Current Requirements
Improved Replacements for SN75518N
Designed primarily for use with vacuum-fluorescent displays, the UCN5818AF smart power BiMOS II driver combine CMOS shift registers, data latches, and control circuitry, with bipolar high-speed sourcing outputs and DMOS active pull-down circuitry. The high-speed shift register and data latches allow direct interfacing with microprocessor LSI-based systems. A CMOS serial data output enables cascade connections in applications requiring additional drive lines. Feature 60 V and -40 mA output ratings, allowing them to be used in many other peripheral power driver applications.
Theis smart power driver has been designed with BiMOS II logic for improved data entry rates. With a 5 V supply, they will typically operate above 5 MHz. At 12 V, significantly higher speeds are obtained. Use of this device with TTL may require the use of appropriate pull-up resistors to ensure an input logic high.
The UCN5818AF is supplied in a 40-pin plastic dual in-line package with 0.600" (15.24 mm) row spacing. A copper lead frame, reduced supply current requirement, and low output saturation voltage permits operation with minimum junction temperature rise. The 'A' package allows all 32 outputs to be operated at -25 mA continuously over the operating temperature range.
Datasheet link: http://www.datasheets.org.uk/datasheet.php?article=3412018
