NTE8374

Integrated Circuit

Seven–Segment Latch/Decoder/Driver for Common Anode LED’s

Description:

The NTE 8374 is a 7–segment decoder driver in a 16–Lead DIP type package incorporating input

latches and output circuits to directly drive common anode LED displays.

Features:

D High speed input latches for data storage

D 15mA constant current sink capability to directly drive common anode led displays

D Increases incandescent display life

D Active low latch enable for easy interface with MSI circuits

D Data input loading essentially zero when latch disabled

D Automatic ripple blanking for suppression of leading and/or trailing–edge zeroes.

Input Loading/Fan–Out:

Description

Pin Name

High

Low

Address (Data) Inputs,

1.0

0.25 (Note 1)

Latch Enable Input (Active LOW)

0.5

0.25

Ripple Blanking Input (Active LOW)

RBI

0.5

0.25

Ripple Blanking as Output (Active LOW)

RBO

1.0

0.5

Ripple Blanking as Input (Active LOW)

RBO

–

0.75

Constant Current Outputs (Active LOW)

a – g

Open Collector

15mA

Note 1. Except Loading is 10

Absolute Maximum Ratings:

Input Voltage

–0.5V to +5.5V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Current

–30mA to +5.0mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage Applied to Outputs in HIGH State:

Standard TTL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Open Collector

–0.5V to +7.0V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–0.5V to +7.0V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current Applied to Output in LOW State (Max)

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage Temperature Range

–65

° to +150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ambient Temperature Range Under Bias

–55

° to +125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Junction Temperature Range Under Bias

–55

° to +175°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Recommended Operating Conditions:

Supply Voltage

+4.75V to +5.25V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Free Air Ambient Temperature

0

°C to +70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .