DS3695AM Equivalent & Substitute Parts

Part Overview

The DS3695AM is a half-duplex RS422/RS485 transceiver IC manufactured by Texas Instruments in an 8-SOIC surface mount package. This device is classified as obsolete, with 6,181 pieces currently in stock. Due to its obsolete status, identifying functionally equivalent and mechanically compatible substitute parts is essential for ongoing system support, design updates, and long-term component availability planning.

Key Parameters

Parameter	DS3695AM
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS422, RS485
Duplex Configuration	Half
Number of Drivers/Receivers	1/1
Receiver Hysteresis	70 mV
Voltage Supply Range	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DS3695AM is determined by the following critical parameters:

Primary Compatibility Criteria:

Protocol support: RS422 and RS485
Duplex mode: Half-duplex operation
Driver/Receiver configuration: 1/1 (single driver, single receiver)
Package type: 8-SOIC surface mount
Supply voltage range: 4.75V ~ 5.25V
Operating temperature range: 0°C ~ 70°C minimum
Receiver hysteresis: 70 mV nominal

Substitute parts are grouped into two categories based on these parameters:

Category A - Direct Electrical Equivalents (8-SOIC Package, Half-Duplex, 4.75V ~ 5.25V Supply): ADM485ARZ-REEL, ADM485JRZ, ADM485JRZ-REEL, ADM485JRZ-REEL7, and LT1785ACS8#PBF maintain the same supply voltage range and operating temperature specifications as the DS3695AM.

Category B - Extended Performance Substitutes (8-SOIC Package, Half-Duplex, Wider Supply/Temperature Range): HI-4853PSHF and ISL3179EFBZ/ISL3179EFBZ-T offer enhanced specifications including wider supply voltage ranges (3.15V ~ 5.5V and 3V ~ 3.6V respectively) and extended temperature ranges, providing greater design flexibility for future applications.

Note on ISL3180EIBZ: This part operates in full-duplex mode with a 14-SOIC package, making it functionally different from the half-duplex 8-SOIC DS3695AM and suitable only for applications requiring full-duplex communication.

Parameter Comparison

Part Number	Manufacturer	Protocol	Duplex	Drivers/Receivers	Package	Supply Voltage	Operating Temp	Data Rate	RoHS Status	Product Status
DS3695AM	Texas Instruments	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	—	Non-compliant	Obsolete
ADM485ARZ	UMW	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	2.5Mbps	ROHS3 Compliant	Active
ADM485ARZ-REEL	Analog Devices Inc.	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	-40°C ~ 85°C	5Mbps	ROHS3 Compliant	Active
ADM485JRZ	Analog Devices Inc.	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	5Mbps	ROHS3 Compliant	Active
ADM485JRZ-REEL	Analog Devices Inc.	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	5Mbps	ROHS3 Compliant	Active
ADM485JRZ-REEL7	Analog Devices Inc.	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	5Mbps	ROHS3 Compliant	Active
HI-4853PSHF	Holt Integrated Circuits Inc.	RS422, RS485	Half	1/1	8-SOIC	3.15V ~ 5.5V	-55°C ~ 175°C	20Mbps	ROHS3 Compliant	Active
ISL3179EFBZ	Renesas Electronics Corporation	RS422, RS485	Half	1/1	8-SOIC	3V ~ 3.6V	-40°C ~ 125°C	40Mbps	ROHS3 Compliant	Active
ISL3179EFBZ-T	Renesas Electronics Corporation	RS422, RS485	Half	1/1	8-SOIC	3V ~ 3.6V	-40°C ~ 125°C	40Mbps	ROHS3 Compliant	Active
ISL3180EIBZ	Renesas Electronics Corporation	RS422, RS485	Full	1/1	14-SOIC	3V ~ 3.6V	-40°C ~ 85°C	40Mbps	ROHS3 Compliant	Active
LT1785ACS8#PBF	Analog Devices Inc.	RS422, RS485	Half	1/1	8-SOIC	4.75V ~ 5.25V	0°C ~ 70°C	250kbps	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Conditions): ADM485JRZ, ADM485JRZ-REEL, and ADM485JRZ-REEL7 are the primary candidates for direct substitution. All three maintain the 4.75V ~ 5.25V supply voltage range and 0°C ~ 70°C operating temperature range of the DS3695AM. These parts are manufactured by Analog Devices Inc., carry active product status, and are ROHS3 compliant. The variants differ only in packaging format (Tube vs. Cut Tape & Digi-Reel), allowing selection based on procurement requirements.

For Extended Temperature Range Applications: ADM485ARZ-REEL extends the operating temperature range to -40°C ~ 85°C while maintaining the same supply voltage specification. This part is suitable for designs requiring enhanced thermal performance beyond the original DS3695AM specification.

For Low-Voltage or High-Performance Applications: HI-4853PSHF and ISL3179EFBZ/ISL3179EFBZ-T offer significantly different supply voltage ranges and operating temperatures. HI-4853PSHF operates from 3.15V ~ 5.5V with a -55°C ~ 175°C temperature range and 20Mbps data rate. ISL3179 variants operate from 3V ~ 3.6V with -40°C ~ 125°C range and 40Mbps data rate. These are suitable only for new designs or redesigns that can accommodate their different electrical specifications.

Not Recommended for Direct Substitution: ISL3180EIBZ differs fundamentally in duplex mode (full-duplex vs. half-duplex) and package type (14-SOIC vs. 8-SOIC), making it unsuitable for direct replacement of the DS3695AM.

Compliance Consideration: All active substitute parts listed are ROHS3 compliant, addressing regulatory requirements that the obsolete DS3695AM does not meet.

Frequently Asked Questions (FAQ)

Q: Can I use ADM485ARZ-REEL as a direct replacement for DS3695AM? A: Yes, ADM485ARZ-REEL is electrically and mechanically compatible. It maintains the same 4.75V ~ 5.25V supply voltage and 8-SOIC package. However, it extends the operating temperature range to -40°C ~ 85°C, which is a superset of the DS3695AM's 0°C ~ 70°C range. This provides additional design margin without requiring circuit modifications.

Q: What is the difference between ADM485JRZ and ADM485JRZ-REEL? A: Both parts are electrically identical. The difference is packaging format: ADM485JRZ is supplied in Tube packaging, while ADM485JRZ-REEL and ADM485JRZ-REEL7 are supplied in Cut Tape & Digi-Reel format. Selection depends on your procurement and assembly process requirements.

Q: Why is ISL3180EIBZ listed but not recommended? A: ISL3180EIBZ operates in full-duplex mode and uses a 14-SOIC package, whereas DS3695AM is half-duplex in an 8-SOIC package. Full-duplex transceivers have different pin configurations and functional behavior, making them unsuitable for direct substitution in half-duplex designs.

Q: Can I use HI-4853PSHF or ISL3179EFBZ in place of DS3695AM? A: These parts are not direct substitutes due to different supply voltage ranges. HI-4853PSHF requires 3.15V ~ 5.5V, and ISL3179EFBZ requires 3V ~ 3.6V, whereas DS3695AM requires 4.75V ~ 5.25V. Using them would require circuit redesign to accommodate their different voltage specifications.

Q: Are all substitute parts RoHS compliant? A: All active substitute parts listed are ROHS3 compliant. The original DS3695AM is RoHS non-compliant. If regulatory compliance is a requirement for your application, any of the active substitute parts will satisfy this requirement.

Q: What does receiver hysteresis mean, and why does it matter? A: Receiver hysteresis is the voltage difference between the rising and falling threshold levels of the receiver input. The DS3695AM specifies 70 mV hysteresis. Most substitute parts maintain similar hysteresis values (70 mV for ADM485 series, 28 mV for ISL3179/ISL3180, 20 mV for LT1785). Lower hysteresis values provide tighter noise margins but may require cleaner signal conditioning.

Q: Which substitute offers the highest data rate? A: ISL3179EFBZ and ISL3179EFBZ-T support 40Mbps data rate, compared to the DS3695AM's unspecified rate. However, these parts operate at 3V ~ 3.6V supply voltage, requiring circuit redesign if your system uses 5V logic levels.

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