SI9241AEY Vishay, SI9241AEY Datasheet - Page 4

• Manufacturer Part Number: SI9241AEY
• Description: RF Transceiver Bus Tranceiver
• Manufacturer: Vishay

Specifications of SI9241AEY

• Mounting Style: SMD/SMT
• Package / Case: SO-8
• No. Of Channels: 1
• Input Level: 3.5V
• Logic Case Style: SOIC
• No. Of Pins: 8
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +125°C
• Logic Type: Bus Transceiver
• Number Of Transmitters: 1
• Power Supply Requirement: Single
• Package Type: SOIC N
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Lead free / RoHS Compliant

Si9241AEY
Vishay Siliconix
FUNCTIONAL DESCRIPTION
The Si9241AEY can be either in transmit or receive mode and
it contains over temperature, and short circuit V
detection circuits.
The voltage on K is internally compared to V
voltage on the K pin is less than V
“low.” If the voltage on the K pin is greater than V
output will be “high.”
In order to be in transmit mode, CS must be set “low.” When
CS and TX are set “low” the internal MOSFET will turn on,
causing the K pin to be “low.” In the transmit mode, the
processor monitors RX and TX. When the two mirror each
other there is no fault. In the event of over temperature, or short
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4
PIN CONFIGURATION
FAULT
V
CS
DD
TX
Narrow Body
SO Package
Top View
1
2
3
4
8
7
6
5
BAT/2
Pin Number
then RX output will be
RX
V
K
GND
BAT
1
2
3
4
5
6
7
8
BAT/2
BAT/2
PIN DESCRIPTION
BAT
. If the
then RX
Symbol
FAULT
GND
V
V
TX
CS
RX
BAT
fault
K
DD
Positive Power Supply
Transmit, Input
Chip Select, Input
Fault, Open Drain Output
Ground Connection
Transmit/Receive, Bidirectional
Battery Power Supply
Receiver, Output
circuit to V
protect the IC and the external open drain FAULT pin will be
asserted. The K pin will stay in high impedance and RX will
follow the K pin. The fault will be reset when CS is toggled high.
RX, CS and TX pins have an internal pull up resistor to V
while the K pin has internal pull down resistors. When any one
of the TX, V
When CS is set “high” the Si9241AEY is in receive mode and
the internal MOSFET for the K pin is turned off. The RX output
will follow the K pin. If CS is “low” while the IC is receiving data,
an incorrect fault signal will occur.
To inhibit the short detect, tie CS and TX together.
Si9241AEY -T1—E3 (Lead (Pb)-Free)
Description
Part Number
BAT
Si9241AEY -T1
ORDERING INFORMATION
BAT
, the Si9241AEY will turn off the K output to
or GND pins is open the K output is off.
Temperature Range
S-40137—Rev. E, 16-Feb-04
Document Number: 70787
−40 to 125_C
40 to 125_C
DD