7400AS

## **7400AS and 7401AS** 

## **Electronic LCD Totalizers** 

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7400AS<br>7401AS<br>**----- End of picture text -----**<br>


The 7400 Series is an 8 digit LCD bi-directional totalizing counter for PCB mounting available with or without front panel pushbutton reset. It uses the latest CMOS circuitry to achieve an expected battery life of 10 years and has a low speed contact closure input with integral de-bounce circuitry. This low power, electronic totaliser is ideally suited to portable, battery powered applications, position, length and distance measuring applications, event counting and OEM Equipment eg electricity meters. 

## **Key Features** 

## **Typical Applications** 

- 8 digit high contrast LCD characters. 

- 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 debounce circuitry. 

☎☎ ☎☎ ☎☎ 

- UL and cUL/CSA approved. 

## **Dimensions** 

**Supply Voltage** 2.6 - 3.4VDC **Current Consumption** Less than 10μA, typically 5μA **Reset** Remote, manual & non-reset. Manual reset enable is available on some models **Display** 8 digit, 8mm 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 

## **Product Dimensions** 

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13.5mm<br>47mm<br>Kk > >| ce <<br>2.5mm 3mm<br>0.2mm Dia spigots<br>0.2mm Dia hole<br>R - 2 1D+<br>’mmm F < 2.54mm = te | |<br>3mm 35.56mm<br>7.62mm<br>21mm<br>7.62mm<br>10.5mm<br>**----- End of picture text -----**<br>


## **Part Numbers** 

**7400AS** 8 digit LCD bi-directional totalising counters for PCB mounting, with front panel pushbutton reset **7401AS** 8 digit LCD bi-directional totalising counters for PCB mounting 

**Trumeter (Europe) Trumeter (The Americas)** Pilot Mill 6601 Lyons Rd, Suite H-7, Alfred Street Coconut Creek, Florida Bury, FL 33073, BL9 9EF USA Tel: +44 161 674 0960 Tel: +1 954 725 6699 Email: sales.uk@trumeter.com Email: sales.usa@trumeter.com 

**Innovative Design Technologies Sdn. Bhd** Lot 5881, Lorong Iks Bukit Minyak 1 Taman Perindustrian Iks, 14000 Bukit Tengah Penang, Malaysia Web: www.idtworld.com Tel: + 604 5015700 Email: sales.my@idtworld.com 

**www.trumeter.com** 

7400-DS.v.2.0            08/2021