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A5191HRTLG-XTP The A5191HRTLG-XTP is a single-chip CMOS HART modem from On Semiconductor. It features 1200 bps FSK modulation with half-duplex operation and operates from 3.0V to 5.5V.
Mfr Part #:

A5191HRTLG-XTP

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The A5191HRTLG-XTP is a single-chip CMOS HART modem from On Semiconductor. It features 1200 bps FSK modulation with half-duplex operation and operates from 3.0V to 5.5V.
✓ Total Stock: 18,882 pcs

A5191HRTLG-XTP Available from 3 distributors

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Smaxon Electronics ✓
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15,050 pcs
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15050 pcs On Request 1 On Request On Request 21+ On Request On Request
PROSOFT ELECTRONICS ✓
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2,120 pcs
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2120 pcs On Request 1 On Request On Request 22+20+ On Request On Request
Xingangxin ✓
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1,712 pcs
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1712 pcs On Request 1 On Request On Request On Request On Request On Request
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A5191HRTLG-XTP Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Baud Rates
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Modulation
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A5191HRTLG-XTP Description

Short technical summary and product information.

The A5191HRTLG-XTP is a single-chip CMOS modem designed for HART (Highway Addressable Remote Transducer) communication. It is manufactured by On Semiconductor and meets HART physical layer requirements. The modem provides modulation, demodulation, receive filtering, carrier detect, and transmit-signal shaping with few external passive components.

 

The device uses phase continuous frequency shift keying (FSK) at 1200 bits per second, employing Bell 202 shift frequencies of 1200 Hz and 2200 Hz. It operates in half-duplex mode, disabling receive circuits during transmit and vice versa to conserve power. The supply voltage range is 3.0V to 5.5V, making it compatible with both 3.3V and 5V microcontrollers. An external 460.8 kHz crystal or ceramic resonator is required for the internal oscillator.

 

The A5191HRTLG-XTP is available in a 32-lead LQFP package (7x7mm) for surface mount assembly. It supports an industrial temperature range of -40°C to +85°C, suitable for harsh environments. The device is Pb-Free and listed as RoHS3 compliant. Typical applications include HART multiplexers, HART modem interfaces, and 4-20 mA loop powered transmitters.

A5191HRTLG-XTP Quick Information

Product Type: Modem IC
Canonical Name: On Semiconductor A5191HRTLG-XTP HART Modem
Subcategory: Modems

A5191HRTLG-XTP Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

A5191HRTLG-XTP Features

  • Single-chip CMOS HART modem.
  • Half-duplex 1200 bps FSK modulation.
  • Operates from 3.0V to 5.5V supply.
  • Industrial temperature range -40°C to +85°C.
  • Available in 32-LQFP surface mount package.

A5191HRTLG-XTP Applications

  • Used in HART multiplexer systems.
  • Ideal for HART modem interface designs.
  • Suitable for 4-20 mA loop powered transmitters.
  • Applications in intrinsically safe environments.

A5191HRTLG-XTP FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the A5191HRTLG-XTP?

3.0V to 5.5V.

What is the operating temperature range?

-40°C to +85°C.

What package is the A5191HRTLG-XTP available in?

32-LQFP (7x7mm) surface mount package.

Is the A5191HRTLG-XTP RoHS compliant?

Yes, it is listed as RoHS3 compliant (unverified).

What modulation scheme does the modem use?

Phase continuous frequency shift keying (FSK) with Bell 202 shift frequencies of 1200 Hz and 2200 Hz.

What is the data rate of the A5191HRTLG-XTP?

1200 bps.

What protocol does the modem support?

HART protocol.

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