DS34C86TM RS422/RS423 Receiver IC - Equivalent & Substitute Parts

Part Overview

The DS34C86TM is a 0/4 receiver interface IC designed for RS422 and RS423 serial communication protocols, packaged in a 16-SOIC surface mount configuration. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for new designs and ongoing system support. The receiver features 60 mV hysteresis and operates across the industrial temperature range of -40°C to 85°C with a 4.5V to 5.5V supply voltage.

Key Parameters

Parameter	Value
Manufacturer Part Number	DS34C86TM
Manufacturer	Texas Instruments
Category	Interface
Type	Receiver
Protocol	RS422, RS423
Number of Drivers/Receivers	0/4
Receiver Hysteresis	60 mV
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the DS34C86TM is determined by strict equivalence across the following electrical and mechanical parameters:

Protocol Compatibility: RS422 and RS423 support
Receiver Configuration: 0/4 driver/receiver count
Receiver Hysteresis: 60 mV threshold
Supply Voltage Range: 4.5V to 5.5V
Operating Temperature Range: -40°C to 85°C
Package Type: 16-SOIC surface mount
Pin Configuration: Identical pinout within 16-SOIC package

Three substitute parts meet these criteria and are classified by their relationship to the main part:

Direct Manufacturer Equivalent: DS34C86TM/NOPB (same base part, active status, tube packaging)
Manufacturer Recommended Equivalent: AM26C32ID (alternative receiver IC, last time buy status)
Parametric Equivalent: DS26C32ATM/NOPB (alternative receiver IC, active status)

Parameter Comparison

Parameter	DS34C86TM	DS34C86TM/NOPB	AM26C32ID	DS26C32ATM/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	Receiver	Receiver	Receiver	Receiver
Protocol	RS422, RS423	RS422, RS423	RS422, RS423	RS422, RS423
Number of Drivers/Receivers	0/4	0/4	0/4	0/4
Receiver Hysteresis	60 mV	60 mV	60 mV	60 mV
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active	Last Time Buy	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For New Designs: DS26C32ATM/NOPB is the preferred selection. This part maintains active product status with ROHS3 compliance and EAR99 ECCN classification, ensuring long-term availability and regulatory alignment.

For Existing Inventory Replacement: DS34C86TM/NOPB provides the most direct substitution as the same base part with improved compliance status (ROHS3 compliant, EAR99 ECCN). This option minimizes design validation requirements.

For Last-Time-Buy Scenarios: AM26C32ID is available as a manufacturer-recommended equivalent with last time buy status. This part is suitable for legacy system support where extended availability is not required.

All three substitute parts share identical electrical parameters and package specifications with the original DS34C86TM, ensuring functional compatibility within the specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can DS34C86TM/NOPB be used as a direct replacement for DS34C86TM?

A: Yes. DS34C86TM/NOPB is the same base part with identical electrical specifications, receiver hysteresis, supply voltage range, operating temperature, and 16-SOIC package configuration. The primary difference is product status (active vs. obsolete) and improved RoHS compliance.

Q: What is the difference between AM26C32ID and DS26C32ATM/NOPB?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. AM26C32ID carries last time buy status, while DS26C32ATM/NOPB maintains active product status. For new designs, DS26C32ATM/NOPB is recommended due to ongoing availability.

Q: Are all substitute parts pin-compatible with DS34C86TM?

A: All substitute parts use the 16-SOIC package with identical pinout configuration. Direct PCB substitution is supported without layout modifications.

Q: Do the substitute parts meet current regulatory requirements?

A: DS34C86TM/NOPB and DS26C32ATM/NOPB are ROHS3 compliant with EAR99 ECCN classification. AM26C32ID is also ROHS3 compliant with EAR99 ECCN. The original DS34C86TM is RoHS non-compliant and carries ECCN 5A991B1.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the original DS34C86TM and all substitutes, have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in RS422 and RS423 applications?

A: Yes. All parts support both RS422 and RS423 protocols with 60 mV receiver hysteresis, 4.5V to 5.5V supply voltage, and -40°C to 85°C operating temperature range, making them suitable for both protocol implementations.

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