A5191HRTPG-XTD Wired Transceivers & Modems by ON Semiconductor

Industrial HART-protocol modem

Status: Active
Series: A5191HRT
RoHS: Compliant
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A5191HRT is a single-chip, CMOS modem for use in highway addressable remote transducer (HART) field instruments and masters. The modem and a few external passive components provide all of the functions needed to satisfy HART physical layer requirements including modulation, demodulation, receive filtering, carrier detect, and transmit-signal shaping. The A5191HRT is pin-compatible with the SYM20C15. See the Pin Description and Functional Description sections for details on pin compatibility with the SYM20C15. The A5191HRT uses phase continuous frequency shift keying (FSK) at 1200 bits per second. To conserve power, the receive circuits are disabled during transmit operations and vice versa. This provides the half-duplex operation used in HART communications.
Distributor Price Stock
Logo for Avnet Silica Avnet Silica -
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Logo for Future Electronics Future Electronics US$5.67
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Logo for Avnet America Avnet America US$5.56
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Logo for EBV Elektronik EBV Elektronik -
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Logo for Newark Electronics Newark Electronics US$7.52
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Logo for RS Americas RS Americas US$9.65
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Logo for element14 element14 US$9.43
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Low power
Bell 202 shift frequencies of 1200 Hz and 2200 Hz
Single-chip, half-duplex 1200 bits per second FSK modem
Transmit-signal wave shaping
Receive band-pass filter
Meets HART physical layer requirements
CMOS compatible
Optimal for intrinsically safe applications
Highway Addressable Remote Transducer (HART) field instruments and masters
End Products
Instrumentation terminals and measurement devices


Description A5191HRT
Compliance Pb-free Halide free
Data Transmission Standard HART
Data Rate 1200 baud
Number of Drivers 1
Number of Receivers 1
VCC Min (V) 3
VCC Max (V) 5.5
tPLH Max (µs) 0.02
IO Max (µA) 670
IIH Max (mA) 0.0005
Package Type PLCC-28

Alternative Descriptions

PLCC TUBE | Component Electronics
A5191HRT Series 1200 bps 3.3 A Surface Mount Single Chip HART Modem - PLCC-28 | Future Electronics
Modem Chip Hart Single 1.2Kbps 28-Pin PLCC Tube/Tray | Avnet America
Hart Modem, 1.2Kbps, Plcc-28 | Newark Electronics
A5191HRTPG-XTD, Modem Single Chip with HART FSK,3 to 5.5V,1200bit/s,28-Pin, PLCC | ON Semiconductor A5191HRTPG-XTD | RS Americas
HART MODEM, 1.2KBPS, PLCC-28 | Farnell

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Frequently Asked Questions

Where can I find additional details, specifications and documents for a A5191HRTPG-XTD?

Additional datasheets, footprints and schematics for A5191HRTPG-XTD are listed on our Part Details page. You can also find images and similar parts to A5191HRTPG-XTD on this page.

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What category does A5191HRTPG-XTD fall under?

The A5191HRTPG-XTD is listed under Interfaces > Wired Transceivers & Modems.

Can I view similar or alternative parts?

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Is the A5191HRTPG-XTD RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for A5191HRTPG-XTD have stock available?

Authorised distributors including Avnet Silica, Future Electronics, Avnet America, EBV Elektronik and Newark Electronics have stock available or on a lead time for A5191HRTPG-XTD.

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