Maker : Holtek Semiconductor
Part No. : HT7612

  Datasheet PDF : HT7612.pdf
  Cross Reference : HT7612 Cross Reference
  Buy Component : HT7612 Find Stock and Price

Shortcut : HT7610  HT7611  HT7612  HT761X 

Product Information

HT7612 General Purpose PIR Controller Features · Operating voltage: 2.7V ~ 5.5V · Standby current typical 15mA · CDS input · High noise immunity · 40 second power-on delay · 10 second high speed warm-up for test mode · 1~3783 second adjustable PIR turn on time. · Output drive for Relay, TRIAC and LED · Output drive buzzer alarm · Low voltage detector · Override function · 16-pin DIP/NSOP package Applications · PIR light control · Motion detectors · Alarm system · Auto door bells General Description The HT7612 is PIR controller specifically designed to interface to PIR sensors to implement motion sensing application products such as intruder alarms. The controller has the features of PIR sensitivity adjustment and a CDS can be connected to the controller for automatic detection. The HT7612 is available in low profile NSOP & DIP packages. Block Diagram V D D V S S O P 2 O O P 2 N O P 1 O O P 1 N A m p lifie r C ir c u it C o m p a ra to r C ir c u it www.DataSheet4U.com O P 1 P V R E F L D O & R e fe r a n c e V o lta g e B U Z /L V D B U Z /C D S D T T im in g D e la y C o n tro l C ir c u it R E L A Y /L E D T R A IC T E S T /S C S y s ta m O s c illa to r Z C M O D E Rev. 1.00 1 November 12, 2009 HT7612 Pin Assignment O P 1 P 1 2 3 4 5 6 7 8 9 O P 1 N O P 1 O O P 2 N O P 2 O V R E F D T V S S 1 6 1 5 1 4 1 3 1 2 1 1 1 0 T E S T /S C Z C B U Z /L V D B U Z /C D S M O D E R E L A Y /L E D T R IA C V D D H T 7 6 1 2 1 6 D IP -A /N S O P -A Pin Description Pin Name OP1P OP1N OP1O OP2N OP2O Vref DT I/O I I O I O O I Mask Option PMOS PMOS CMOS PMOS CMOS NMOS PMOS OP1 Non-inverting Input OP1 Inverting Input OP1 Output OP2 Inverting Input OP2 Output Reference Voltage Delay time oscillator input. Connected to an external RC to adjust the output duration. TEST and SC share the same pin. TEST is used to test the 32 Khz system frequency. SC is used to detect LVD and CDS. Negative power supply, ground Positive power supply RELAY and LED share the same pin. Active high - a RELAY is driven through an external NPN transistor. BUZ and CDS share the same pin. The BUZ output can drive a piezo buzzer. CDS is connected to a CDS voltage divider for daytime/night auto-detection. A low input to this pin can disable the PIR input. CDS is a Schmitt trigger input with a 15~20second debounce time. BUZ and LVD share the same pin. The BUZ output can drive a piezo buzzer LVD is used as an input low voltage detector. AC zero crossing detector input. TRIAC output drive. The output is a pulse output when active. Operating mode selection input. VDD: Output is always ON VSS: Output is always OFF Open: Auto detection Test Mode Input. Description TEST/SC VSS VDD RELAY/LED O ¾ ¾ O CMOS ¾ ¾ CMOS www.DataSheet4U.com BUZ/CDS I/O CMOS BUZ/LVD ZC TRIAC I/O I O CMOS ¾ CMOS MODE I CMOS Rev. 1.00 2 November 12, 2009 HT7612 Absolute Maximum Ratings Supply Voltage ...........................VSS-0.3V to VSS+6.0V Input Voltage..............................VSS-0.3V to VDD+0.3V Zero Crossing Current ................................Max. 300mA Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Storage Temperature ............................-50°C to 125°C Operating Temperature...........................-40°C to 85°C Electrical Characteristics Symbol VDD VREF IREF IDD IOH1 IOL1 IOH2 IOL2 IOH3 IOL3 VIH VIL VTH1 VTL1 VOS fSYS fDT Parameter Operating Voltage Reference Voltage - see Note Driving Current Standby Current TRIAC Source Current TRIAC Sink Current BUZ & BUZ Source Current BUZ & BUZ Sink Current RELAY/LED Source Current RELAY/LED Sink Current MODE High Input Voltage MODE Low Input Voltage ZC High Transfer Voltage ZC Low Trans...

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