Dual-channel Isolated 24-V to 60-V digital input receiver for digital input modules


Product details


Number of channels (#) 2 Forward/reverse channels 2/0 Isolation rating (Vrms) 2500 Data rate (Max) (Mbps) 4 Rating Catalog Supply voltage (Max) (V) 60 Supply voltage (Min) (V) 2.25 Surge voltage capability (Vpk) 5200 Operating temperature range (C) -40 to 125 Propagation delay (Typ) (ns) 140 open-in-new Find other Isolated digital inputs

Package | Pins | Size

SSOP (DBQ) 16 29 mm² 4.9 x 6 open-in-new Find other Isolated digital inputs

Technical documentation

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Type Title Date
* Datasheet ISO121x Isolated 24-V to 60-V Digital Input Receivers for Digital Input Modules datasheet (Rev. F) Apr. 16, 2020
Application note L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. A) Apr. 14, 2020
Application note HHow to Design Isolated Digital Input Modules for Surge Immunity Mar. 31, 2020
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
More literature CSA Certification (Rev. P) Nov. 19, 2019
Technical articles Solving lifetime and temperature challenges in AC motor drives with capacitive-based isolation Nov. 01, 2019
More literature VDE certificate for basic isolation for DIN VDE V 0884-11:2017-01 (Rev. Q) Sep. 20, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
White paper How Capacitive Isolation Solves Key Challenges in AC Motor Drives Aug. 23, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
Technical articles What are isolated digital inputs? Mar. 08, 2019
Technical articles Chief Technology Officer Ahmad Bahai discusses isolation in a world of collaboration Oct. 02, 2018
Application note Space saving design techniques for multi-channel high-voltage DI modules (Rev. B) Oct. 02, 2018
Application note How to Design Isolated Comparators for ±48V, 110V and 240V DC and AC Detection (Rev. A) Mar. 14, 2018
Application note How To Simplify Isolated 24-V PLC Digital Input Module Designs (Rev. B) Mar. 14, 2018
Application note ISO121x Threshold Calculator for 9V to 300V DC and AC Voltage Detection Mar. 01, 2018
User guide ISO1212 Isolated Digital-Input Receiver Evaluation Module (Rev. A) Jan. 18, 2018
Application note How to Improve Speed and Reliability of Isolated Digital Inputs in Motor Drives Dec. 16, 2017
Application note How to use isolation to improve ESD, EFT and surge immunity in industrial system Jul. 24, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

The ISO1212EVM is an evaluaton module (EVM) to evaluate the ISO1212 isolated industrial receiver that can receive a 9-V to 60-V field input and provide an isolated digital output. The EVM accommodates 4 dual-channel ISO1212 devices showcasing 8-channel functionality. The EVM features (...)
  • Supports IEC 61131-2 Type 1/2/3 characteristics PLC standards
  • Upto 5-Mbps data rate
  • Does not need field-side supply

Design tools & simulation

SLLM372B.ZIP (52 KB) - IBIS Model
SLLM384A.ZIP (62 KB) - PSpice Model
SLLM391A.TSC (1215 KB) - TINA-TI Reference Design
SLLM392.ZIP (16 KB) - TINA-TI Spice Model
SLLM392A.ZIP (16 KB) - TINA-TI Spice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

Redundant dual-channel safe torque off (STO) reference design for AC inverters and servo drives
TIDA-01599 — This reference design implements safe torque off functionality in variable speed drives (per IEC61800-5-2) by using dual channel isolated STO signals to control the inverter that supplies power to the motor. This is accomplished by independently enabling/disabling power to the isolated gate driver (...)
document-generic Schematic
High density isolated PoE and GigE reference design for machine vision cameras and vision sensors
TIDA-010083 — Power over Ethernet (PoE) offers an easy and reliable solution to combine power and data in one cable with high data rate and long reach. This combination makes PoE ideal for small devices such as machine vision cameras and vision sensors. This reference design implements a complete PoE powered (...)
document-generic Schematic
SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger
TIDA-010071 — This reference design highlights an ultra-low standby isolated AC/DC auxiliary power stage followed by converters and linear regulators, a comparator-based control pilot interface to meet the SAE J1772 standard, an  efficient relay and contactor drive and isolated line voltage sensing across (...)
document-generic Schematic
Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications
TIDA-010008 — This reference design features multiple approaches for  protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
document-generic Schematic
Industrial wireless condition monitoring reference design
TIDA-010012 — Use this reference design to quickly establish a wireless network that connects various types of sensors for condition monitoring directly to the Cloud. Condition Monitoring is based on a regular or permanent recording of the machine condition which is necessary for predictive maintenance. Inputs (...)
document-generic Schematic
96-Channel Bidirectional Digital Input Module Reference Design for PLC
TIDA-060014 — This reference design is a compact implementation of 96 isolated digital input channels using the ISO1212, an isolated digital input receiver. This design shows the current limit feature of the ISO1212 device which has better thermal performance than traditional optocoupler solutions. This design (...)
document-generic Schematic
Broken Wire Detection Using An Optical Switch Reference Design
TIDA-01509 — This reference design shows a compact implementation of 16 isolated digital input channels using TI's ISO121x devices. The design is split into two groups of eight channels each. A broken wire detection can be executed using only one additional optical switch for each channel or two optical switches (...)
document-generic Schematic
Sub 1-W, 16-Channel, Isolated Digital Input Module Reference Design
TIDA-01508 — This reference design shows a compact implementation of 16 isolated digital input channels using TI's ISO121x devices. The design works without an isolated supply and supports up to 100-kHz input signals (200-kbit) per channel. All 16 channels consume less than 1-W input power combined, which (...)
document-generic Schematic

CAD/CAE symbols

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