Datasheet Texas Instruments SN65HVS881PWPR — 数据表

SN65HVS881
www.ti.com. SLAS642 – MARCH 2009 INDUSTRIAL 8-DIGITAL-INPUT SERIALIZER WITH DIAGNOSTICS
FEATURES 1 Eight Inputs
– High Input Voltage – up to 34 V
– Selectable Debounce Filters – 0 ms to 3 ms
– Flexible Input Current Limit: 0.2 to 5.2 mA
– Field Pins Protected to 15-kV HBM ESD Diagnostics:
– Parity Check
– Undervoltage Indication
– Overtemperature Indication Output Drivers for External Status LEDs
2 Cascadable in Multiples of Eight Inputs
SPI-Compatible Interface
Regulated 5-V Output for External Isolator APPLICATIONS Sensor Inputs for Industrial Automation and
Process Control
High Channel Count Digital Input Modules for
PC and PLC Systems
Decentralized I/O Modules
Motion Control Systems DESCRIPTION
The SN65HVS881 is an eight channel, digital-input serializer for high-channel density digital input modules in
industrial automation. In combination with galvanic isolators the device completes the interface between the high
voltage signals on the field-side and the low-voltage signals on the controller side. Input signals are
current-limited and then validated by internal debounce filters.
With the addition of a few external components, the input switching characteristics can be configured in …