DATAMATH  CALCULATOR  MUSEUM

Texas Instruments SN75497 Digit Driver Chip aka SN27882, SN97311

Features

The SN27882/SN75497 7-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 SN75497 is preferred on designs running on 3 batteries and is typically found in designs without additional segment drivers (TMC0501).

QUICK-LINK to Display Drivers.

Family Members and Applications

SR-50, 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 SN27882/SN75497 is 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 SN27882/SN75497 is approximately 65 mils * 50 mils / 1.7 mm * 1.3 mm.

Packaging

The SN/27882/SN75497 uses a standard 0.3 wide 16-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 16 V VSS
2 O Digit output 1 15 I Digit input 1
3 O Digit output 2 14 I Digit input 2
4 O Digit output 3 13 I Digit input 3
5 O Digit output 4 12 I Digit input 4
6 O Digit output 5 11 I Digit input 5
7 O Digit output 6 10 I Digit input 6
8 O Digit output 7 9 I Digit input 7


horizontal rule

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

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