8 digit LCD bi-directional totalising counter for PCB mounting, with pushbutton reset.
This PCB mount bi-directional totalising counter operates from an external 3VDC supply. It is supplied with an electrical reset.
See also model 7401AS wich is supplied without a front panel pushbutton reset.

Features

8 digit high contrast LCD characters
Latest CMOS circuitry achieves an expected battery life of 10 years (1/2 AA 900mAH 3V lithium battery)
Remote reset facility
Leading zero blanking
Add/subtract counting of pulses up to 10kHz
Low speed contact closure input with integral de-bounce circuitry
CE, UL and cUL/CSA approved
Inputs are provided for count, direction and external reset.

Specification

Supply Voltage
2.6 - 3.4VDC
Current Consumption
Less than 10µA, typically 5µA
Display
8 digit, 8mm height, high contrast LCD characters with leading zero blanking
Electronic Count Input (1)
10kHz maximum, positive edge triggered, 0.7V threshold, 100µS minimum pulse length, TTL/CMOS Compatible
Low Speed Count Input (2)
Contact closure/open collector input, 30Hz maximum, negative edge triggered, 0.7V threshold, 25mS minimum pulse length
Reset Input (R)
Contact closure/open collector, negative edge triggered, 0.7V threshold, 15mS minimum pulse length
Direction Input (D)
Electronic input TTL/CMOS Compatible. Add=logic 1, Subtract=logic 0(0V)
Operating Temp
-10°C to +60°C
Storage Temp
-20°C to +70°C
Ordering Information

7400AS - With pushbutton reset