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ISO7242MDW

Quad-channel 2/2 digital isolator, 150Mbps, 2500Vrms, 16-SOIC, -40 to 125C

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制造商零件：

ISO7242MDW

包装：

SOIC-16 (DW) (10.30 x 7.50 x 2.65 mm)

品牌：

产品类别：

集成电路 IC, 接口集成电路

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说明

产品概览

The ISO7242MDW from Texas Instruments is a quad-channel, 2 forward / 2 reverse, 150-Mbps digital isolator in a 16-pin SOIC (DW) package. It provides galvanic isolation up to 2500 Vrms using a capacitive SiO2 isolation barrier, supporting both 3.3 V and 5 V supply rails on either side independently. The M-suffix version features CMOS VCC/2 input thresholds without input noise filters, enabling maximum data rates up to 150 Mbps with a typical propagation delay of 19 ns.

主要规格

渠道	4 (2 forward / 2 reverse)
数据速率	150 Mbps
隔离电压	2500 Vrms (VISO), 4000 VPK (VIOTM)
传播延迟	19 ns (typ)
脉冲宽度失真	2 ns (max)
CMTI	25 kV/µs (min)
电源电压	3.3 V to 5 V per side
Supply Current	3 mA per channel (typ)
工作温度	-40°C to +125°C
包装	16-SOIC (DW)

特点

Capacitive SiO2 isolation barrier for high EMC robustness
Low channel-to-channel output skew: 1 ns max
Low pulse width distortion: 2 ns max
Jitter content: 1 ns typ at 150 Mbps
Default output HIGH when input disabled or VCC1 unpowered
UL 1577 and DIN EN IEC 60747-17 certified
4 kV ESD protection on all pins

应用

Industrial automation and motor drive isolation
Isolated SPI, UART, and GPIO communication
Medical equipment galvanic isolation
Power supply feedback loop isolation
Automotive CAN/LIN bus isolation

产品介绍：ISO7242MDW 产品介绍

The ISO7242MDW is a high-speed quad-channel digital isolator from Texas Instruments featuring two forward and two reverse signal channels. Built on TI’s proven capacitive SiO2 isolation technology, it provides 2500 Vrms basic isolation with 4000 VPK transient withstand voltage and 25 kV/us minimum common-mode transient immunity. The M-option provides CMOS VCC/2 input thresholds without noise filtering, supporting data rates up to 150 Mbps with 19 ns typical propagation delay. Each side of the isolator can be powered independently from 3.3 V or 5 V supplies, enabling mixed-voltage system designs. The device meets UL 1577 and DIN EN IEC 60747-17 safety certifications and is rated for operation from -40°C to +125°C, making it suitable for harsh industrial and automotive environments.

工作原理：ISO7242MDW 工作原理

The ISO7242MDW uses a capacitive isolation barrier with SiO2 dielectric to transfer digital signals across the galvanic isolation boundary. Each input channel consists of two internal data paths: a high-frequency path (100 kbps to 150 Mbps) using differential edge detection, and a low-frequency path (DC to 100 kbps) using pulse-width modulation (PWM). An internal decision logic circuit monitors the time between signal transitions and automatically selects the appropriate path. High-frequency signals pass through the capacitive barrier via edge-differentiated differential pulses, while low-frequency or DC signals are modulated by an internal oscillator to create PWM carriers that can traverse the capacitive barrier. At the output, a low-pass filter removes the PWM carrier, and a multiplexer selects the correct signal path. This dual-channel architecture ensures reliable data transfer across the full DC-to-150 Mbps range.

引脚说明：ISO7242MDW 引脚定义和功能

针脚	名称	类型	功能
1	VCC1	电源	Side 1 supply voltage (3.3 V or 5 V)
2	INA	输入	Channel A forward input
3	OUTB	输出	Channel B reverse output
4	IND	输入	Channel D forward input
5	OUTC	输出	Channel C reverse output
6	EN1	输入	Side 1 output enable (active high)
7	接地1	地面	Side 1 ground
8	接地1	地面	Side 1 ground
9	接地2	地面	Side 2 ground
10	EN2	输入	Side 2 output enable (active high)
11	INC	输入	Channel C reverse input
12	OUTA	输出	Channel A forward output
13	INB	输入	Channel B reverse input
14	OUTD	输出	Channel D forward output
15	VCC2	电源	Side 2 supply voltage (3.3 V or 5 V)
16	VCC2	电源	Side 2 supply voltage

Application Scenarios:In which products and applications isISO7242MDW 中古

Industrial Motor Drives: Isolated gate driver control and current sensing feedback in variable-frequency drives
Isolated Communication Interfaces: SPI, UART, and GPIO isolation between high-voltage and low-voltage domains
Medical Equipment: Patient-connected measurement isolation per IEC 60601
Power Supply Feedback: Isolated error amplifier and voltage monitor loops in offline converters
汽车系统: Battery management isolation and CAN bus ground separation

Alternative Models:What chips are recommended as replacements for ISO7242MDW

模型	制造商	渠道	数据速率	Isolation	说明
ISO7742FDWR	德州仪器	4 (2/2)	100 Mbps	5000 Vrms	Higher isolation, reinforced
ADUM1410ARWZ	模拟器件公司	4 (4/0)	150 Mbps	2500 Vrms	All same direction
SI8642BB-B-IS	硅实验室	4 (2/2)	150 Mbps	5000 Vrms	Lower power, reinforced
ISO7241MDW	德州仪器	4 (3/1)	150 Mbps	2500 Vrms	3 forward / 1 reverse variant
CBCU5742DR	德州仪器	4 (2/2)	100 Mbps	5000 Vrms	Auto-qualified version

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