HT7610 datasheet(3/11 Pages) HOLTEK

Part #	HT7610

Description	General Purpose PIR Controller

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Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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Pin Description

Pin No.

Pin Name

I/O

Internal

Connection

Description

AB

1

VSS

I

—

Negative power supply

2

RELAY

O

CMOS

RELAY drive output through an external NPN

transistor, active high

2

TRIAC

O

CMOS

TRIAC drive output

The output is a pulse output when active.

3

OSCD

I/O

PMOS IN

NMOS OUT

Output timing oscillator I/O

It is connected to an external RC to adjust output

duration.

4

OSCS

I/O

PMOS IN

NMOS OUT

System oscillator I/O

OSCS is connected to an external RC to set the

system frequency. The system frequency

≅ 16KHz

for normal application.

5

ZC

I

CMOS

Input for AC zero crossing detection

6

CDS

I

CMOS

CDS is connected to a CDS voltage divider for

daytime/night auto-detection. Low input to this pin

can disable the PIR input. CDS a schmitt trigger

input with 5-second input debounce time.

7

MODE

I

CMOS

Operating mode selection input:

VDD: Output is always ON

VSS: Output is always OFF

Open: Auto detection

8

VDD

I

—

Positive power supply

9

VEE

O

NMOS

Regulated voltage output

The output voltage is about –4V with respect to

VDD.

10

RSTB

I

Pull-High

Chip reset input, active low

11

OP1P

I

PMOS

Noninverting input of OP1

12

OP1N

I

PMOS

Inverting input of OP1

13

OP1O

O

NMOS

Output of OP1

14

OP2P

I

PMOS

Noninverting input of OP2

15

OP2N

I

PMOS

Inverting input of OP2

16

OP2O

O

NMOS

Output of OP2

HT761X

3

24th Mar ’97

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