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| 型号： | IRMS6452 |
| 厂商： | Vishay Intertechnology,Inc. |
| 英文描述： | SIDE VIEW IRMS6452/TOP VIEW |
| 中文描述： | 侧视图IRMS6452/TOP视图 |
| 文件页数： | 2/7页 |
| 文件大小： | 595K |
| 代理商： | IRMS6452 |
Document Number: 82579
Revision 05-J uly-02
www.vishay.com
2
Table 1. Input/Output Functional Description
Symbol
RxD
I/O Type
Output
Polarity
Active
Low
Function
This output indicates received serial data. It is a push-pull CMOS driver capable of driv-
ing a standard CMOS or TTL load. No external pull-up or pull-down resistor is required.
This output may switch indeterminately when the module is transmitting. This output pin
is in tri-state mode when the module is in shutdown mode and during digital serial pro-
gramming operations. RxD is high at initializaton.
This CMOS input is used to transmit serial data when SD/ Mode is low. An on-chip pro-
tection circuit disables the LED driver if the TxDpin is asserted for longer than 60
When used in conjunction with the SD/ Mode pin. TxD is low at initializaton.
Assertion of this pin high for a period of time exceeding 400
shutdown mode. On the falling edge of this signal, the state of the TxDpin is sampled and
used to set receiver low bandwidth (TxD= Low) or high bandwidth (TxD= High) mode.
See Figures 7 and 8 for timings. SD is low at initializaton
Connect to positive power supply (2.7 V to 5.25 V). Placement of a 1.0
coupling ceramic capacitor as close as possible to the V
Connect to power supply ground. A solid ground plane is recommended.
This pin could be connected to ground.
This pin can be connected directly to V
CC
. No series resistor is required.
LED cathode. Leave this pin unconnected. This pin may be monitored to determine the
state of the LED.
TxD
Input
Active
High
μ
s.
SD/ Mode
Input
Active
High
μ
s places the module into
V
CC
Positive Supply
-
μ
F to 10.0
μ
F de-
CC
pin is recommended.
GND
NC
L
EDA
L
EDC
Ground (Power)
No Connect
Input
Output
-
-
-
-
Figure 1. Block Diagram
Figure 2. Minimum Vishay Low-Power Integrated Infrared
Transceiver Circuit Diagram
Comp
Amp
TxD
GND
LEDC
RxD
V
CC
Driver
SD/Mode
Mode &
Power
Control
LEDA
Driver
V
CC
IR
Controller
IRMS6452
SD/ Mode
IRTX
TxD
LEDA
V
GND
IRRX
RxD
GPO
LEDC
NC
CC
C1= 1
μ
F to 10
μ
F
V
CC
Table 2. Recommended Operating Conditions
Table 3. DC Electrical Characteristics
Table 4. Receiver DC Electrical Characteristics
Symbol
V
CC
T
A
Parameter
Supply Voltage
Ambient Operating
Temperature
Min
2.7
-25
Typical
Max
5.25
75
Unit
V
C
Conditions
Symbol
I
CC
I
CC
I
SD
Parameter
Supply Current; Listening
Supply Current; Receiving
Supply Current; Shutdown
Min
2.0
Typical
3.2
3.8
50
Max
4.5
15
100
Unit
mA
mA
nA
Conditions
Typical value obtained at Vcc=5 V
Interface and optical input power dependent
V
SD
=V
CC
Symbol
V
OL
I
OL
V
OH
I
OH
RL
C
L
Parameter
RxD Output Low Voltage
Static Sink Current on RxD
RxD Output High Voltage
Static Source Current on RxD
RxD Rosistive Load
RxD Capacitive Load
Min
Typical
Max
0.5
2.4
Unit
V
mA
V
mA
k
pF
Conditions
2.2K
load.
Vcc-0.5
2.4
2.2K
load.
2.2
50
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