SN75512C

ą Each Device Drives 12 Lines 60-V Output Voltage Swing Capability 25-mA Output Source Current Capability High-Speed Serially-Shifted Data Input TTL-Compatible Inputs Latches on All Driver Outputs description The SN65512C and SN75512C are monolithic BIDFET† integrated circuits designed to drive a dot matrix or segmented vacuum fluorescent display. All device inputs are diode-clamped pnp inputs and assume a high logic level when open circuited. The nominal input threshold is 1.5 V. Outputs are totem-pole structures formed by an npn emitter follower and double-diffused MOS (DMOS) transistors. The device consists of a 12-bit shift register, 12 latches, and 12 output AND gates. Serial data is entered into the shift register on the low-to-high transition of CLOCK. When high, LATCH ENABLE transfers the shift register contents to the outputs of the 12 latches. The active-low STROBE input enables all Q outputs. Serial data output from the shift register can be used to cascade shift registers. This output is not affected by LATCH ENABLE or STROBE. The SN65512C is characterized for operation from − 40°C to 85°C. The SN75512C is characterized for operation from 0°C to 70°C. SN65512C, SN75512C VACUUM FLUORESCENT DISPLAY DRIVERS ą SLDS054 − D3516, MAY 1990 DW OR N PACKAGE (TOP VIEW) Q11 Q12 STROBE SERIAL OUT DATA IN VCC1 CLOCK LATCH ENABLE Q1 Q2 1 2 3 4 5 6 7 8 9 10 20 Q10 19 Q9 18 Q8 17 Q7 16 VCC2 15 GND 14 Q6 13 Q5 12 Q4 11 Q3 logic symbol‡ 8 LATCH ENABLE 3 STROBE 7 CL...