Quad LED Segment Driver
DS55493 DS75493 Quad LED Segment Driver
April 1990
DS55493 DS75493 Quad LED Segment Driver
General Description
The DS5...
Description
DS55493 DS75493 Quad LED Segment Driver
April 1990
DS55493 DS75493 Quad LED Segment Driver
General Description
The DS55493 DS75493 is a quad LED segment driver It is designed to interface between MOS IC’s and LED’s An external resistor is required for each segment to drive the output current which is approximately equal to 0 7V RL and is relatively constant independent of supply variations Blanking can be achieved by taking the chip enable (CE) to a logical ‘‘1’’ level
Features
Y Y Y Y Y Y
Low voltage operation Low input current for MOS compatibility Low standby power Display blanking capability Output current regulation Quad high gain circuits
Schematic and Connection Diagrams
TL F 7561 – 1
Dual-In-Line Package
Truth Table
CE 0 0 1
X e Don’t care
VIN 1 0 X
IOUT ON OFF OFF
TL F 7561 – 2
Order Number DS55493J DS75493J or DS75493N See NS Package Number J16A or N16A
C1995 National Semiconductor Corporation
TL F 7561
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Output Voltage 10V 10V VCC
Operating Conditions
Min Supply Voltage VCC VSS Temperature TA DS75493 DS55493 32 65 0
b 55
Max 88 88
a 70 a 125
Units V V C C
b 65 C to a 150 C Storage Temperature Range b 25 mA Output Current (IOUT) Maximum Power Dissipation at 25 C Cavity Package 1371 mW Molded Package 1280...
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