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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 V_CC 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

V_SS 2.7 3.6 6.6 V

I_L 100 mA

I_L 0.2 mA Output Leakage Current

V_IL -8.5 0 V High-level Input Voltage

V_IH 2.7 V_SS V Low-level Input Voltage

• Technology

The SN27882/SN75497 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 SN27882/SN75497 is approximately 65 mils * 50 mils / 1.7 mm * 1.3 mm.

• Packaging

The SN27882/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 V_SS

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

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

Item	Min	Typ	Max	Unit	Comments
V_SS	2.7	3.6	6.6	V
I_L	100			mA
I_L			0.2	mA	Output Leakage Current
V_IL	-8.5		0	V	High-level Input Voltage
V_IH	2.7		V_SS	V	Low-level Input Voltage

Pin	IO	Function	Pin	IO	Function
1	V	GND	16	V	V_SS
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