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Texas Instruments SN75498 Digit Driver Chip

Features

The SN75498 9-channel digit driver is similar to the SN75492 but with some key differences:

Operates from lower VCC voltages, as low as 2.7 V
MOS- and TTL-compatible inputs
Low standby power


The SN75498 is preferred on designs running on 3 batteries and is typically found in designs without additional segment drivers (TMS0803).

QUICK-LINK to Display Drivers.

Family Members and Applications

TI-2550-II, etc. 

Technical Specifications

Item Min Typ Max Unit Comments
VSS 2.7 3.6 5.5 V  
IL 100     mA  
IL          
VI-VD           
VI-VD           

Technology

The SN75498 was manufactured in a 10 um metal gate Bipolar process (metal width = 0.4 mil / 10 um, metal spacing = 0.4 mil / 10 um).

The die size of the SN75498 is approximately tbd mils * tbd mils / tbd mm * tbd mm.

Packaging

The SN75498 uses a standard 0.3 wide 20-pin DIP (Dual In-line Package with a 0.1 / 2.54 mm lead pitch).

Pin Configuration

Pin IO Function Pin IO Function
1 V GND 20 V VSS
2 O Digit output 1 19 I Digit input 1
3 O Digit output 2 18 I Digit input 2
4 O Digit output 3 17 I Digit input 3
5 O Digit output 4 16 I Digit input 4
6 O Digit output 5 15 I Digit input 5
7 O Digit output 6 14 I Digit input 6
8 O Digit output 7 13 I Digit input 7
9 O Digit output 8 12 I Digit input 8
10 O Digit output 9 11 I Digit input 9


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If you have additions to the above datasheet please email: joerg@datamath.org.

Joerg Woerner, February 02, 2001. No reprints without written permission.