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PDF HT7611A Data sheet ( Hoja de datos )
| Número de pieza | HT7611A | |
| Descripción | General Purpose PIR Controller | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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HT7610A/HT7610B/HT7611A/HT7611B
General Purpose PIR Controller
Features
· Operating voltage: 5V~12V
· Standby current: 100mA (Typ.)
· On-chip regulator
· Adjustable output duration
· CDS input
· 40 second warm-up
Applications
· PIR light controllers
· Motion detectors
· ON/AUTO/OFF selectable by MODE pin
· Override function
· Auto-reset if the ZC signal disappears over
3 seconds
· 16-pin DIP package
· Alarm systems
· Auto door bells
General Description
The HT761x is a CMOS LSI chip designed for use in au-
tomatic PIR lamp control. It can operate with a 2-wire
configuration for triac applications or with a 3-wire con-
figuration for relay applications. The chip is equipped
with operational amplifiers, a comparator, timer, a zero
crossing detector, control circuit, a voltage regulator, a
system oscillator, and an output timing oscillator.
Its PIR sensor detects infrared power variations induced
by the motion of a human body and transforms it to a
voltage variation. If the PIR output voltage variation con-
forms to the criteria (refer to the functional description),
the lamp is turned on with an adjustable duration.
The HT761x offers three operating modes (ON, AUTO,
OFF) which can be set through the MODE pin. While the
chip is working in the AUTO mode the user can override
it and switch to the TEST mode, or manual ON mode, or
return to the AUTO mode by switching the power switch.
Selection Table
Part No.
ZC Off/On
for Override
HT7610A
HT7610B
2 times
HT7611A
HT7611B
1 time
Flash on Mde
Auto-change
Flash
No flash
Override ON
Duration
8 hrs
8 hrs
Comparator
Window
1
16 (VDD-VEE)
1
16
(VDD-VEE)
Effective Trigger
Width
>24ms
>24ms
Note: Part numbers suffixed with A are for Relay application while those suffixed with B are for Triac application.
Pin Assignment
VSS
T R IA C
O SCD
O SCS
ZC
CDS
M ODE
VDD
1
2
3
4
5
6
7
8
16 O P 2O
15 O P 2N
14 O P 2P
13 O P 1O
12 O P 1N
11 O P 1P
10 R S T
9 VEE
H T 7 6 1 0 B /1 1 B
1 6 D IP -A
T R IA C V E R S IO N
VSS
R E LA Y
O SCD
O SCS
ZC
CDS
M ODE
VDD
1
2
3
4
5
6
7
8
16 O P 2O
15 O P 2N
14 O P 2P
13 O P 1O
12 O P 1N
11 O P 1P
10 R S T
9 VEE
H T 7 6 1 0 A /1 1 A
1 6 D IP -B
R E L A Y V E R S IO N
Rev. 1.60
1 March 21, 2013
1 page  
HT7610A/HT7610B/HT7611A/HT7611B
ZC
ZC is a CMOS input structure. It receives AC line fre-
quency and generates zero crossing pulses to synchro-
nize the triac driver. By effective ZC signal switching
(switch OFF/ON 1 or 2 times within 3 seconds by mask
option), the chip provides the following additional func-
tions:
· Test mode control
Within 10 seconds after power-on, effective ZC
switching will force the chip to enter the test mode.
During the test mode, the outputs will be active for a
duration of 2 seconds each time a valid PIR trigger
signal is received. If a time interval exceeds 32 sec-
onds without a valid trigger input, the chip will auto-
matically enter the AUTO mode.
· Override control
When the chip is working in an AUTO mode
(MODE=open), the output is activated by a valid PIR
trigger signal and the output active duration is con-
trolled by an OSCD oscillating period. The lamp can
be switched always to ²ON² from the AUTO mode by
either switching the MODE pin to VDD or switching
the ZC signal by an OFF/ON operation of the power
switch (OFF/ON once or twice within 3 seconds by
mask option). The term ²override² refers to the
change of operating mode by switching the power
switch. The chip can be toggled from ON to AUTO by
an override operation. If the chip is overridden to ON
and there is no further override operation, it will auto-
matically return to AUTO after an internal preset ON
time duration has elapsed. This override ON time du-
ration is 8 hours.
The chip provides a mask option to determine the out-
put flash times (3 times) when changing the operating
mode. It will flash 3 times at a 1Hz rate each time the
chip changes from an AUTO mode to another mode or
flash 3 times at a 2Hz rate when returning to the
AUTO mode. But if the AUTO mode is changed by
switching the MODE switch it will not flash.
RST
RST is used to reset the chip. It is internal pull-high and
active low.
The use of CRST can extend the power-on initial time. If
the RST pin is an open circuit (without CRST), the initial
time is the default (40 secs).
REST
V DD
100mF
RST
C RST
Fig.1 RST Application Example
VCC
VEE
Power-on Initial
The PIR signal amplifier requires a warm up period after
power-on. The input should be disabled during this period.
In the AUTO mode within the first 10 seconds of
power-on initialization, the chip allows override control
to enter the test mode. After 40 seconds of the initial
time the chip allows override control between ON and
AUTO. It will remain in the warm up period if the total ini-
tial time has not elapsed after returning to AUTO.
In case that the ZC signal disappears for more than 3
seconds, the chip will restart the initialization operation.
However, the restart initial time is always 40 seconds
and cannot be extended by adding CRST to the RST pin
as shown in the Fig.1.
Mask Options
The HT761x offers mask options to select the output
flash (3 times) when changing the operating mode. The
chip will flash 3 times at a 1Hz rate each time it changes
from AUTO to another mode and flash 3 times at a 2Hz
rate when it returns to the AUTO mode. However the
chip will not flash if the mode is changed by switching
the MODE switch.
· Options for effective override: Once or twice Off/On op-
eration of power switch within 3 seconds. Once for
HT7611A/HT7611B and twice for HT7610A/HT7610B.
· Options for output flash to indicate effective override
operation. Flash for HT7610A/HT7610B and no flash
for HT7611A/HT7611B.
O p e r a tin g
M ode
AU TO
ZC
fla s h
ON
fla s h
AU TO
fla s h
ON
8 h o u rs
ZC Override Timing
fla s h
AU TO
Rev. 1.60
5 March 21, 2013
5 Page 
16-pin DIP (300mil) Outline Dimensions
A
16
B
1
9
8
HT7610A/HT7610B/HT7611A/HT7611B
16
B
1
A
9
8
H
C
D
E
F
G
I
Fig1. Full Lead Packages
· MS-001d (see fig1)
Symbol
A
B
C
D
E
F
G
H
I
Symbol
A
B
C
D
E
F
G
H
I
Min.
0.780
0.240
0.115
0.115
0.014
0.045
¾
0.300
¾
Min.
19.81
6.10
2.92
2.92
0.36
1.14
¾
7.62
¾
H
C
D
E
F
G
I
Fig2. 1/2 Lead Packages
Dimensions in inch
Nom.
¾
¾
¾
¾
¾
¾
0.100
¾
0.430
Dimensions in mm
Nom.
¾
¾
¾
¾
¾
¾
2.54
¾
10.92
Max.
0.880
0.280
0.195
0.150
0.022
0.070
¾
0.325
¾
Max.
22.35
7.11
4.95
3.81
0.56
1.78
¾
8.26
¾
Rev. 1.60
11 March 21, 2013
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet HT7611A.PDF ] | |
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