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DS3695ATM/NOPB RS422/RS485 Half Transceiver Equivalent & Substitute Parts
Part Overview
The DS3695ATM/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 alternatives for new designs and ongoing production requirements. The device operates within a 4.75V to 5.25V supply voltage range with a 70 mV receiver hysteresis specification, suitable for industrial serial communication applications requiring half-duplex protocol support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DS3695ATM/NOPB |
| Manufacturer | Texas Instruments |
| Category | Interface |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Configuration | 1/1 Half Duplex |
| Receiver Hysteresis | 70 mV |
| Voltage Supply Range | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DS3695ATM/NOPB is determined by the following critical parameters:
Primary Compatibility Criteria:
- Protocol support: RS422 and RS485 half-duplex operation
- Configuration: 1/1 driver/receiver architecture
- Package: 8-SOIC surface mount form factor
- Supply voltage range: 4.75V to 5.25V minimum overlap
- Receiver hysteresis: 70 mV nominal specification
- RoHS3 compliance and MSL 1 rating
Substitution Logic: Substitute parts must maintain identical protocol support, driver/receiver count, and physical package dimensions to ensure direct PCB compatibility. Supply voltage ranges must overlap within the 4.75V to 5.25V window. Operating temperature ranges may extend beyond the original specification without compromising substitution validity. Receiver hysteresis values within ±20 mV of the 70 mV specification are acceptable for equivalent signal integrity performance in standard RS422/RS485 applications.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Config | Hysteresis (mV) | Supply Voltage | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|
| DS3695ATM/NOPB | Texas Instruments | RS422, RS485 | 1/1 Half | 70 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Obsolete |
| SN65176BDR | UMW | RS422, RS485 | 1/1 Half | 70 | 4.75V ~ 5.25V | -40 ~ 105 | 8-SOIC | Active |
| SN65ALS1176DR | Texas Instruments | RS422, RS485 | 1/1 Half | 60 | 4.75V ~ 5.25V | -25 ~ 85 | 8-SOIC | Active |
| SN65HVD485ED | Texas Instruments | RS422, RS485 | 1/1 Half | 30 | 4.5V ~ 5.5V | -40 ~ 85 | 8-SOIC | Last Time Buy |
| SN75176AD | Texas Instruments | RS422, RS485 | 1/1 Half | 50 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Obsolete |
| SN75176ADR | Texas Instruments | RS422, RS485 | 1/1 Half | 50 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Active |
| SN75ALS176ADR | Texas Instruments | RS422, RS485 | 1/1 Half | 60 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Active |
| SN75ALS176BD | Texas Instruments | RS422, RS485 | 1/1 Half | 60 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Obsolete |
| SN75ALS176BDR | Texas Instruments | RS422, RS485 | 1/1 Half | 60 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Active |
| SN75ALS176DR | Texas Instruments | RS422, RS485 | 1/1 Half | 60 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Obsolete |
| SN75176ADG4 | Texas Instruments | RS422, RS485 | 1/1 Half | 50 | 4.75V ~ 5.25V | 0 ~ 70 | 8-SOIC | Obsolete |
Engineering Selection Recommendations
Primary Recommendation: SN75ALS176BDR
The SN75ALS176BDR is the preferred substitute for the DS3695ATM/NOPB. This part maintains identical supply voltage specifications (4.75V ~ 5.25V), operates within the original temperature range (0°C ~ 70°C), and provides a receiver hysteresis of 60 mV, which falls within acceptable tolerance of the original 70 mV specification. The device carries Active product status with confirmed inventory availability (7,796 pcs), ensuring long-term supply continuity. RoHS3 compliance and MSL 1 rating match the original part specifications.
Secondary Recommendation: SN75176ADR
The SN75176ADR offers Active status with substantial inventory (35,100 pcs) and identical electrical parameters to the original part, including 50 mV receiver hysteresis and matching supply voltage range. This part provides extended availability and represents a proven alternative within the Texas Instruments product line.
Alternative for Extended Temperature Range: SN65ALS1176DR
For applications requiring extended operating temperature coverage, the SN65ALS1176DR provides -25°C to 85°C operation while maintaining 4.75V to 5.25V supply voltage compatibility. This part is Active with high inventory (650,200 pcs) and includes a 35 Mbps data rate specification.
Not Recommended: SN65HVD485ED
Although functionally compatible, this part carries Last Time Buy status, indicating discontinued production. New designs should avoid this part number due to supply uncertainty.
Frequently Asked Questions (FAQ)
Q: Can I use SN75ALS176BDR as a direct replacement for DS3695ATM/NOPB on existing PCBs?
A: Yes. Both parts use the 8-SOIC package with identical pinout and electrical interface specifications. The supply voltage range (4.75V ~ 5.25V) and operating temperature range (0°C ~ 70°C) are identical. The receiver hysteresis difference (60 mV vs. 70 mV) does not affect functional compatibility in standard RS422/RS485 applications.
Q: What is the difference between SN75176ADR and SN75ALS176BDR?
A: Both parts are functionally equivalent for the DS3695ATM/NOPB application. The primary difference is receiver hysteresis: SN75176ADR provides 50 mV while SN75ALS176BDR provides 60 mV. Both values are within acceptable tolerance for RS422/RS485 communication. SN75ALS176BDR is recommended due to higher inventory availability and Active product status.
Q: Why is the DS3695ATM/NOPB obsolete?
A: The part has reached end-of-life status from Texas Instruments. Substitute parts with Active status provide equivalent functionality with improved long-term supply assurance.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended substitute parts carry RoHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part specifications.
Q: Can I use SN65ALS1176DR if my application requires operation below 0°C?
A: Yes. The SN65ALS1176DR operates from -25°C to 85°C, extending the lower temperature limit compared to the original DS3695ATM/NOPB specification of 0°C to 70°C. This part maintains identical supply voltage compatibility and is suitable for extended temperature range applications.
Q: What packaging options are available for substitute parts?
A: All substitute parts are supplied in 8-SOIC surface mount packages with 0.154" (3.90mm) width, ensuring direct PCB compatibility. Packaging formats vary (Cut Tape, Digi-Reel, Tube, Tape & Reel) but do not affect electrical or mechanical specifications.
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