HV501

The HV501 is a 32-channel low-voltage serial to high-voltage parallel converter designed for use in matrix-addressable display applications. It is manufactured with the HVCMOS technology for enhanced ruggedness and performance. This device is a direct replacement for the SN75501 family of devices. These devices HV501 are comprised of a 32-bit shift register with a serial data out, strobe andsustain control logic, and level shifters with high-voltage DMOS output buffers. There are some features of HV501 below:When the strobe and sustain outputs are held high the outputs are held high. Data can then be clocked into the shift register without changing the state of the outputs. When the strobe input is brought low with the sustain input remaining high, the outputs will change state to reflect the status of the data in each output's corresponding shift register bit, A logic in the shift register will cause the corresponding output to pull up to VPP, and a logic will cause the output to pull to GND. The sustain input is used to bring all the outputs low. When the sustain input is low, all outputs are low, independent of any other control input.The high-voltage output buffers have low power level shifters : which dissipate no DO power. These level shifters also control the rise and fall times of the outputswhich have been optimized to lower system noise without compromising the current source and sink capability of the output buffers. Additionally, each output has low VFWD clamp diodes to VPP and GND.

The features of HV501 can be summarized as (1)processed with HVCMOS technology; (2)Output voltage of up to 100V; (3)CMOS push-pull output buffers; (4)low-power level shifting; (5)source/sink current minimum of 15mA; (6)shift register speed 8MHz; (7)CMOS compatible inputs; (8)output clamp dicdes to VPP and GND; (9)direct replacement for the SN75501 and SN55501 series devices; (10)44-lead plastic and ceramic surface mount packages available; (11)Hi-Rel processing available.

The absolute maximum ratings of HV501 are (1)supply voltage, VPP: -0.3V to +15V; (2)supply voltage, VNN: -0.3V to +100V; (3)logic input levels: -0.3V to VDD +0.3V; (4)ground currents: 1.5A; (5)continuous total power dissipationt ceramic: 1850mW/Plastic: 1200mW; (6)operating temperature range commercial: -40°C to +85°C/military -55°C to +125°C; (7)storage temperature range: -65°C to 150°C.