Request Quote
(Ships tomorrow)
DS3695AM/NOPB RS422/RS485 Half Transceiver Equivalent & Substitute Parts
Part Overview
The DS3695AM/NOPB is a 1/1 half-duplex RS422/RS485 transceiver IC manufactured by Texas Instruments in an 8-SOIC surface mount package. This part is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and production continuity. The device operates within a 4.75V to 5.25V supply range and supports industrial communication protocols requiring half-duplex transceiver functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DS3695AM/NOPB |
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Half |
| Receiver Hysteresis | 70 mV |
| Voltage - Supply | 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 | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DS3695AM/NOPB is determined by the following critical parameters:
Primary Compatibility Criteria:
- Protocol support: RS422 and/or RS485
- Transceiver configuration: 1/1 (one driver, one receiver)
- Duplex mode: Half-duplex operation
- Package type: 8-SOIC surface mount form factor
- Supply voltage range: 4.75V to 5.25V nominal operation
- Receiver hysteresis: 50 mV to 70 mV acceptable range
Secondary Considerations:
- Product status: Active parts preferred for new designs; obsolete parts acceptable for legacy system maintenance
- RoHS3 compliance: All candidates meet this requirement
- MSL rating: All candidates rated MSL 1 (unlimited moisture sensitivity)
Substitute parts are grouped into two categories: direct replacements with identical electrical specifications and active alternatives with compatible but slightly different operating parameters.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Duplex | Receiver Hysteresis | Supply Voltage | Operating Temp | Package | Status |
|---|---|---|---|---|---|---|---|---|---|
| DS3695AM/NOPB | Texas Instruments | RS422, RS485 | 1/1 | Half | 70 mV | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete |
| SN75ALS176ADR | Texas Instruments | RS422, RS485 | 1/1 | Half | 60 mV | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active |
| SN75ALS176BDR | Texas Instruments | RS422, RS485 | 1/1 | Half | 60 mV | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active |
| SN75ALS176ADR | Texas Instruments | RS422, RS485 | 1/1 | Half | 60 mV | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete |
| SN75176ADR | Texas Instruments | RS422, RS485 | 1/1 | Half | 50 mV | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Active |
| SN65ALS1176DR | Texas Instruments | RS422, RS485 | 1/1 | Half | 60 mV | 4.75V ~ 5.25V | -25°C ~ 85°C | 8-SOIC | Active |
| THVD1550DR | Texas Instruments | RS485 | 1/1 | Half | 50 mV | 4.5V ~ 5.5V | -40°C ~ 125°C | 8-SOIC | Active |
| SN65176BDR | UMW | RS422, RS485 | 1/1 | Half | 70 mV | 4.75V ~ 5.25V | -40°C ~ 105°C | 8-SOIC | Active |
Engineering Selection Recommendations
For Direct Replacement (Identical Operating Temperature Range):
SN75ALS176ADR and SN75ALS176BDR are the primary active alternatives. Both maintain the 0°C to 70°C operating temperature range of the original DS3695AM/NOPB and support dual RS422/RS485 protocols. The 60 mV receiver hysteresis specification is within acceptable tolerance of the original 70 mV rating. Both parts carry ROHS3 compliance and MSL 1 ratings. SN75ALS176BDR is recommended as the first choice due to higher inventory availability (7,796 units) and active product status.
For Extended Temperature Range Applications:
SN65ALS1176DR extends the operating temperature to -25°C to 85°C while maintaining all other electrical compatibility parameters. This part is suitable for industrial environments requiring broader temperature performance. SN65176BDR (UMW manufacturer) provides the widest temperature range (-40°C to 105°C) with matching receiver hysteresis (70 mV) and dual protocol support, though it represents a secondary manufacturer source.
For RS485-Only Applications with Enhanced Performance:
THVD1550DR is an active alternative optimized for RS485 operation with extended temperature range (-40°C to 125°C) and higher data rate capability (50 Mbps). This part is suitable only for designs that do not require RS422 protocol support. The supply voltage range expands to 4.5V to 5.5V, providing additional margin.
Product Status Consideration:
All recommended active alternatives (SN75ALS176ADR, SN75ALS176BDR, SN65ALS1176DR, THVD1550DR, SN65176BDR) are classified as active products, ensuring long-term availability and manufacturing support. The DS3695AM/NOPB obsolete status necessitates migration to one of these active alternatives for new production designs.
Frequently Asked Questions (FAQ)
Q: Can SN75ALS176BDR directly replace DS3695AM/NOPB in existing designs?
A: Yes. Both parts share identical package geometry (8-SOIC), supply voltage range (4.75V to 5.25V), operating temperature range (0°C to 70°C), and dual RS422/RS485 protocol support. The receiver hysteresis difference (60 mV vs. 70 mV) is within acceptable tolerance for industrial communication applications. No circuit modifications are required.
Q: What is the difference between receiver hysteresis values of 50 mV, 60 mV, and 70 mV?
A: Receiver hysteresis defines the voltage differential between the upper and lower threshold levels for signal detection. Higher hysteresis (70 mV) provides greater noise immunity in electrically noisy environments. Lower hysteresis (50 mV) allows detection of smaller signal transitions. All values within the 50–70 mV range are functionally compatible for standard RS422/RS485 bus applications.
Q: Is the SN65176BDR from UMW manufacturer equivalent to Texas Instruments parts?
A: SN65176BDR is functionally equivalent with matching receiver hysteresis (70 mV), dual protocol support, and identical package. However, it represents a secondary manufacturer source. Verify supply chain qualification and quality certifications with your procurement department before adoption.
Q: Why does THVD1550DR have a different supply voltage range (4.5V to 5.5V)?
A: THVD1550DR is optimized for RS485-only applications and includes enhanced performance specifications. The expanded supply voltage range (4.5V to 5.5V vs. 4.75V to 5.25V) provides additional operational margin. This part is suitable only if RS422 protocol support is not required.
Q: Can I use SN65ALS1176DR in place of DS3695AM/NOPB if my application operates at temperatures below 0°C?
A: Yes. SN65ALS1176DR extends the lower operating temperature limit to -25°C while maintaining all other electrical specifications. This part is suitable for applications requiring operation below 0°C. All other parameters remain compatible with the original design.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed carry ROHS3 compliance certification and MSL 1 (unlimited moisture sensitivity) ratings, matching the environmental qualification of the original DS3695AM/NOPB.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts