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
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
SSOP (DBQ) 16 29 mm² 4.9 x 6
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Technical documentation

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* Data sheet ISO121x Isolated 24-V to 60-V Digital Input Receivers for Digital Input Modules datasheet (Rev. F) PDF | HTML 16 Apr 2020
Certificate CQC Certificate for ISOxxDBQ 02 Sep 2022
Certificate TUV Certificate for Isolation Devices (Rev. K) 05 Aug 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. P) 05 Aug 2022
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. T) 12 Jul 2022
Certificate CSA Certification (Rev. Q) 14 Jun 2021
Application note L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. B) 09 Jun 2021
Application note How to Design Isolated Digital Input Modules for Surge Immunity 31 Mar 2020
Technical article Solving lifetime and temperature challenges in AC motor drives with capacitive-based isolation 01 Nov 2019
White paper How Capacitive Isolation Solves Key Challenges in AC Motor Drives 23 Aug 2019
Technical article What are isolated digital inputs? 08 Mar 2019
Application note Space saving design techniques for multi-channel high-voltage DI modules (Rev. B) 02 Oct 2018
Application note How to Design Isolated Comparators for ±48V, 110V and 240V DC and AC Detection (Rev. A) 14 Mar 2018
Application note How To Simplify Isolated 24-V PLC Digital Input Module Designs (Rev. B) 14 Mar 2018
Application note ISO121x Threshold Calculator for 9V to 300V DC and AC Voltage Detection 01 Mar 2018
User guide ISO1212 Isolated Digital-Input Receiver Evaluation Module (Rev. A) 18 Jan 2018
Application note How to Improve Speed and Reliability of Isolated Digital Inputs in Motor Drives 16 Dec 2017
Analog Design Journal How to use isolation to improve ESD, EFT and surge immunity in industrial system 24 Jul 2017

Design & development

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

Evaluation board

ISO1212EVM — Evaluation module for the ISO1212 dual-channel isolated digital input receiver

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 (...)
User guide: PDF
Not available on TI.com
Simulation model

ISO1212 PSpice Transient Model (Rev. A)

SLLM384A.ZIP (62 KB) - PSpice Model
Simulation model

ISO1212 TINA-TI Transient Reference Design (Rev. A)

SLLM391A.TSC (1215 KB) - TINA-TI Reference Design
Simulation model

ISO1212 TINA-TI Transient Spice Model

SLLM392.ZIP (16 KB) - TINA-TI Spice Model
Simulation model

ISO1212 TINA-TI Transient Spice Model (Rev. A)

SLLM392A.ZIP (16 KB) - TINA-TI Spice Model
Simulation model

ISO121X IBIS Model (Rev. B)

SLLM372B.ZIP (52 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-01599 — TÜV SÜD-assessed safe torque off (STO) reference design for industrial drives (IEC 61800-5-2)

This reference design outlines a safe torque off (STO) subsystem for a three-phase inverter with CMOS input isolated IGBT gate drivers. The STO subsystem employs a dual-channel architecture (1oo2) with a hardware fault tolerance of 1 (HFT=1). It is implemented following a de-energize trip concept. (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010083 — High density isolated PoE and GigE reference design for machine vision cameras and vision sensors

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010071 — SAE J1772-compliant electric vehicle service equipment reference design for level 1 and 2 EV charger

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-010008 — Flat-Clamp TVS based Reference Design for Protection Against Transient for Grid Applications

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-060014 — 96-Channel Bidirectional Digital Input Module Reference Design for PLC

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01509 — Broken Wire Detection Using An Optical Switch Reference Design

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 (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01508 — Sub 1-W, 16-Channel, Isolated Digital Input Module Reference Design

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 (...)
Design guide: PDF
Schematic: PDF
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