E981.10A52KC ELMOS Semiconductor, E981.10A52KC Datasheet - Page 13

• Manufacturer Part Number: E981.10A52KC
• Description: Interface - Specialized Basic I/O Link Transciever
• Manufacturer: ELMOS Semiconductor

Specifications of E981.10A52KC

• Rohs: yes
• Product Type: Basic I/O Link Transceiver
• Operating Supply Voltage: 3.3 V
• Supply Current: 1.5 mA
• Maximum Power Dissipation: 900 mW
• Maximum Operating Temperature: + 100 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-20
• Minimum Operating Temperature: - 40 C

E981.10
5.4 receiver
The receiver reads logic information from the C/Q pin and proceeds it to the control unit. The data bits are filtered
in order to suppress erroneous glitches on the C/Q pin and to increase EMC robustness. The receiver functionality
will not be available in the whole IC supply range due to absolute thresholds. If the transceiver supply voltage falls
below 18V, the system may not be able to guarantee sufficient high levels on the C/Q pin and the receiver will out-
put a constant low level on pin RXD.
5.5 Wake-up
In case of an active transmitter the receiver monitors pin C/Q in order to detect wake up events. If the in-
formation read from the C/Q pin changes state, while TXD remains constant, a wake up event is as-
sumed. Alternatively the change to an overcurrent state is evaluated in the same way. The transmitter re-
mains on despite having detected an overload. After Twu the wake up event is signalled at pin WAKE and
the transmitter is turned off. It can be reset with a TXEN=low and activated again with a new TXEN=high.
The figure below shows the functionality of the overcurrent and wake up recognition as well as the resulting be-
havior at the pin ILIM and WAKE UP in detail.
ELMOS Semiconductor AG
Data Sheet
QM-No.: 25DS0007E.02 2010-06-16
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