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PDF PT8A976 Data sheet ( Hoja de datos )
| Número de pieza | PT8A976 | |
| Descripción | 3/2 Function Decoder for Remote Controller | |
| Fabricantes | PT | |
| Logotipo |  |
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Data Sheet
PT8A976/976A/976B
3/2-Function Decoder for Remote Controller
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Features
Introduction
Common features
• Operating power-supply voltage range: 2.0 to 5.5V
• Manual-powe-on/off with ON/OFF button
• One output pin used for external power control
• On-chip oscillator with an external resistor
• On-chip reversing amplifiers
• Low operating current
• Few external components needed
• Package: 16-pin DIP and 16-pin SOIC
PT8A976
• Four output pins for three functions
• Auto-power-off if no signals received in 6 minutes
PT8A976A
• Four output pins for three functions
• Manual Power on/off function
PT8A976B
• Two output pins for three functions
• Compatible with RX3 and MR3
Ordering Information
Par t No.
Package
PT8A976P/976AP/976BP
PT8A976BW
16-pin DIP
16-pin SOIC
PT8A976BDE
Die Form
Logic Block Diagram
PT8A976’s Logic Block Diagram
The PT8A976, PT8A976A and PT8A976B are CMOS LST
designed for the remote controlled toy. The received signal is
amplified by the three-stage amplifier, and then the appropri-
ate amplified signal is sampled, fault-tolerantly checked and
decoded to control the actions of the remote-controlled
toy.There is an oscillator in all of the PT8A976 , PT8A976A
and PT8A976B. By adding an external resistor conveniently,
the oscillator will be constructed. The oscillator frequency
can be adjusted by the external resistor. Pressing the ON/OFF
button can control the output level of the PC pin.
PT8A976, the auto-power-off function is achieved by an in-
ternal counter. When the PT8A976 is powered on the counter
is reset and begin to count. Any received encoding signal also
reset the counter. The PC output pin will keep on a high level
until the counter counts up to about 6 minutes. The PC output
is used to control on/off state of the external power supply.
PT8A976A/976B not provide auto-power-off function.
PT8A976/976A have four output pins corresponding with the
three actions: Forward (Forward), Backward and Left.
PT8A976B has only two output pins corresponding with the
two actions: Forward and Backward.
ON/OFF
OSCI
Oscillator
OSCO
.comSI
et4uVI1
tasheVI2
www.daPT0081(08/02)
Amp.
Amp.
Amp.
Timing
Generator
Signal Sample
and
Fault-Tolerant
Check
VO1
VO2
6 Minutes
Counter
Decoding
Circuit
1
Power
Control
Output
Circuit
PC
FORWARD
FORWARD
BACKWARD
LEFT
Ver:5
1 page  
Data Sheet
PT8A976/976A/976B
3/2-Function Decoder for Remote Controller
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Absolutely Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested)
Storage Temperature ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ -25°C to +85°C
Ambient Temperature with Power Applied ○ ○ ○ ○ ○ ○ ○ -10°C to +40°C
Supply Voltage to Ground Potential (Inputs & V Only) ○ ○ ○ ○ -0.5V to +6.5V
CC
Supply Voltage to Ground Potential (Outputs & D/O Only) ○ ○ -0.5V to +6.5V
DC Input Voltage -0.5V to +6.5V○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
DC Output Current 20 mA○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Power Dissipation 500mW○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Note:
Stresses greater than those listed under MAXIMUM
RATING may cause permanent damage to the device.
This is a stress rating only and functional operation of the
device at these or any other conditions above those indi-
cated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
Electrical Charateristics of PT8A976/976A/976B
DC
Electrical
Charateristics
(Over
the
Operating
Rating,
TA=
-10°C
to
+40°C,
V=
CC
4.0V±
10%)
Parameter
Description
Test Condition
Min
Type Max Unit
VCC Supply voltage
2.0
Supply current with the feedback
ICC resister of the amplifier
VCC=4.0V, T=25OC*
Supply current without the feedback
resister of the amplifier
VCC=4.0V, T=25OC**
4.0 5.5 V
3.0 mA
3.0 mA
ISTB
Standby current with the feedback
resister of the amplifier
VCC=4.0V, T=25OC, OFF
STATE
20 uA
Standby current without the feedback VCC=4.0V, T=25OC, OFF
resister of the amplifier
STATE
10 uA
IIL Input LOW current
IIH Input HIGH current
VIL Input low voltage
For ON/OFF pin, VIN=0V
For ON/OFF pin, VIN=VCC
Guaranteed Logic LOW
level on ON/OFF pin
-60 uA
+1 uA
0.5 V
VIH Input high voltage
Guaranteed Logic HIGH
level on ON/OFF pin
VCC-0.5
V
VOH
VOL
Output high voltage
Output low voltage
IOUT = 1.5mA
IOUT = 200uA
VCC-0.5
V
0.5 V
IOH Output high current
IOL Output low current
VOUT = VCC - 0.5V
VOUT = 0.5V
-1.5
100
mA
uA
Note: * Output unload; 2.2MΩ feedback resistors for the two reversing amplifiers; 300KΩ external resistor for the on-chip oscillator.
** Output unload; VI1 pin, VI2 pin and SI pin connect to GND; 300KΩ external resister for the on-chip oscillator.
PT0081(08/02)
5
Ver:5
5 Page 
Data Sheet
PT8A976/976A/976B
3/2-Function Decoder for Remote Controller
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Mechanical Diagram of 16-pin SOIC
PT0081(08/02)
11
Ver:5
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet PT8A976.PDF ] | |
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