UNISONIC TECHNOLOGIES CO UT912D Technical data
查询UT912DL-S20-T供应商
UNISONIC TECHNOLOGIES CO.,
UT912D CMOS IC
DECODERS FOR REMOTE
CONTROLLER
DESCRIPTION
The UTC UT912D of CMOS LSIs for remote control system
applications are paired with UTC UT912E (refer to the
encoder/decoder cross reference table) and is capable of
decoding information which consists of N address bits and 12-N
data bits. For proper operation, a pair of encoder/decoder with the
same number of addresses and data format should be chosen.
The UTC UT912D also is arranged to provide 8 address bits and
4 data bits.
The decoders receive serial addresses and data from a
programmed UTC UT912E of encoders that are transmitted
together with the header bits by a RF or an infrared transmission
medium upon receipt of a trigger signal. If no error or unmatched
codes are found, the input data codes are decoded and then
transferred to the output pins. The V
indicate a valid transmission.
pin also goes high to
T
FEATURES
* Pair with UTC UT912E
* Operating voltage: 2.4V ~ 12V
* Low power and high noise immunity CMOS technology
* Low standby current
* Built-in oscillator needs only 5% resistor
* Binary address setting
* Received codes are checked 3 times
* Capable of decoding 12 bits of information
* Address/Data number combination: 8 address bits and 4 data
bits
* Vaild transmission indicator
* Minimal external components
SOP-20
DIP-18
*Pb-free plating product number: UT912DL
ORDERING INFORMATION
Order Number
Normal Lead free
Package Packing
UT912D-D18-T UT912DL-D18-T DIP-18 Tube
UT912D-S20-R UT912DL-S20-R SOP-20 Tape Reel
UT912D-S20-T UT912DL-S20-T SOP-20 Tube
ENCODER/DECORDER CROSS REFERENCE TABLE
Decoder Part No. Data Pins Address Pins VTPair Encoder
UTC UT912D
4 8 √
UTC UT912E
Encoder Decoder
DIP-14/18 SOP-16/20 DIP-18 SOP-20
Package
www.unisonic.com.tw 1
Copyright © 2005 Unisonic Technologies Co., QW-R502-044,A
UT912D CMOS IC
PIN CONFIGURATION
DIP-18
1
A0
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
SS
V
9
18
16
15
14
13
12
11
10
17
V
DD
VT
OSC1
OSC2
DIN
D11
D10
D9
D8
V
NC
A0
A1
A2
A3
A4
A5
A6
A7
SS
SOP-20
1
2
3
4
5
6
7
8
9
10
PIN DESCRIPTION
PIN NAME I/O INTERNAL CONNECTION DESCRIPTION
A0 ~ A7 I NMOS Transmission Gate
D8 ~ D11 O CMOS OUT Output data pins, power-on state is low.
DIN I CMOS IN Serial data input pin
VT O CMOS OUT Valid transmission, active high
OSC1 I Oscillator Oscillator input pin
OSC2 O Oscillator Oscillator output pin
VSS Negative power supply, (GND)
VDD Positive power supply
Input pins for address A0 ~ A7 setting, these pins can be
externally set to V
or left open.
SS
20
19
18
17
16
15
14
13
12
11
NC
DD
V
V
T
OSC1
OSC2
DIN
D11
D10
D9
D8
BLOCK DIAGRAM
OSC 2 OSC1
Oscillator
DIN
Buffer
Sync . Detector
UNISONIC TECHNOLOGIES CO., LTD 2
www.unisonic.com.tw QW-R502-044,A
Divider
Data Detector
Comparator
Tr ansm issi on Gate Cir cuit
Address
Data Shift
Register
Comparator
DD
V
V
SS
Latch Circuit
Contr ol Logi c
Buffer
Data
V
T
UT912D CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage VDD -0.3 ~ +13 V
Input Voltage VIN Vss-0.3 ~ VDD+0.3 V
Operating Temperature T
Storage Temperature T
0 ~ +70
OPR
-40 ~ +150 ℃
STG
Note:Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS (Ta=25℃, V
=5V, unless otherwise specified.)
DD
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Operating Voltage V
Standby Current I
Operating Current I
Data Output Current (D8~D11) I
VT Output Current IVT VDD=5V
Input Voltage
High VIH 3.5 5 V
Low V
Oscillator Frequency f
2.4 5 12 V
OPR
Oscillator stops
STN-BY
No load, f
OPR
VDD=5V
DOUT
OSC
VDD=5V 0.1 1
VDD=12V 2 4
=150kHz, VDD=5V 159 400
VOH=4.5V (Source) -1 -1.99
V
=0.5V (Sink) 1 1.9
OL
VOH=4.5V (Source) -1 -1.564
V
=0.5V (Sink) 1 1.53
OL
0 1 V
IL
=1.1MΩ, VDD=5V
R
osc
osc
149 kHz
℃
μA
μA
mA
mA
UNISONIC TECHNOLOGIES CO., LTD 3
www.unisonic.com.tw QW-R502-044,A
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