Specification	ISO1541DR

Channel Type	Bidirectional, Unidirectional
Common Mode Transient Immunity (Min) [Min]	25 kV/µs
Data Rate	1 Mbps
Inputs - Side 1/Side 2 [custom]	2
Inputs - Side 1/Side 2 [custom]	1
Isolated Power	False
Mounting Type	Surface Mount
Number of Channels [custom]	2
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Pulse Width Distortion (Max)	80 ns, 21 ns
Supplier Device Package	8-SOIC
Technology	Capacitive Coupling
Type	I2C
Voltage - Isolation	2500 Vrms
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	3 V

ISO1541-Q1 Series

Automotive, 2.5-kVrms, isolated unidirectional clock, bidirectional I2C isolator

Part	Channel Type	Mounting Type	Voltage - Isolation	Technology	Common Mode Transient Immunity (Min) [Min]	Data Rate	Supplier Device Package	Number of Channels [custom]	Inputs - Side 1/Side 2 [custom]	Inputs - Side 1/Side 2 [custom]	Pulse Width Distortion (Max)	Voltage - Supply [Max]	Voltage - Supply [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [y]	Package / Case [x]	Type	Grade	Qualification
Texas Instruments ISO1541D	Bidirectional Unidirectional	Surface Mount	2500 Vrms	Capacitive Coupling	25 kV/µs	1 Mbps	8-SOIC	2	2	1	21 ns 80 ns	5.5 V	3 V	125 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	I2C
Texas Instruments ISO1541QDRQ1	Bidirectional Unidirectional	Surface Mount	2500 Vrms	Capacitive Coupling	25 kV/µs		8-SOIC	2	2	1	21 ns 80 ns	5.5 V	3 V	125 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	I2C	Automotive	AEC-Q100
Texas Instruments ISO1541DR	Bidirectional Unidirectional	Surface Mount	2500 Vrms	Capacitive Coupling	25 kV/µs	1 Mbps	8-SOIC	2	2	1	21 ns 80 ns	5.5 V	3 V	125 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	I2C
Texas Instruments ISO1541QDQ1	Bidirectional Unidirectional	Surface Mount	2500 Vrms	Capacitive Coupling	25 kV/µs	1 Mbps	8-SOIC	2	2	1	21 ns 80 ns	5.5 V	3 V	125 °C	-40 °C	8-SOIC	3.9 mm	0.154 in	I2C	Automotive	AEC-Q100

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 5.35
		10	$ 3.58
		25	$ 3.12
		100	$ 2.61
		250	$ 2.36
		500	$ 2.21
		1000	$ 2.08
	Digi-Reel«	1	$ 5.35
		10	$ 3.58
		25	$ 3.12
		100	$ 2.61
		250	$ 2.36
		500	$ 2.21
		1000	$ 2.08
	Tape & Reel (TR)	2500	$ 1.95
		5000	$ 1.89
Texas Instruments	LARGE T&R	1	$ 3.03
		100	$ 2.65
		250	$ 1.86
		1000	$ 1.50

Description

General part information

ISO1541-Q1 Series

The ISO1540-Q1 and ISO1541-Q1 devices are low-power, bidirectional isolators that are compatible with I2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.

This isolation technology provides for function, performance, size, and power consumption advantages when compared to optocouplers. The ISO1540-Q1 and ISO1541-Q1 devices enable a complete isolated I2C interface to be implemented within a small form factor.

The ISO1540-Q1 has two isolated bidirectional channels for clock and data lines while the ISO1541-Q1 has a bidirectional data and a unidirectional clock channel. The ISO1541-Q1 is useful in applications that have a single controller while the ISO1540-Q1 is suitable for multi-controller applications. For applications where clock stretching by the target is possible, the ISO1540-Q1 device should be used.