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DS3696AM/NOPB Equivalent & Substitute Parts
Part Overview
The DS3696AM/NOPB is a half-duplex RS422/RS485 transceiver manufactured by Texas Instruments in an 8-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The device operates within a 4.75V to 5.25V supply range with a 70 mV receiver hysteresis specification, designed for industrial serial communication protocols requiring half-duplex transceiver functionality.
Substiute Parts
Key Parameters
| Parameter | DS3696AM/NOPB |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Duplex Configuration | Half |
| Number of Drivers/Receivers | 1/1 |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C |
| Receiver Hysteresis | 70 mV |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution for the DS3696AM/NOPB is determined by the following critical parameters:
- Package compatibility: 8-SOIC form factor with 0.154" width (3.90mm)
- Functional equivalence: Half-duplex RS422/RS485 transceiver with 1 driver and 1 receiver
- Supply voltage range: Must operate within or encompass the 4.75V to 5.25V specification
- Operating temperature range: Must support the 0°C to 70°C operating window
- Surface mount technology: Identical mounting type requirement
- Compliance standards: ROHS3 compliance and EAR99 classification maintained
The substitute parts listed below meet these core electrical and mechanical requirements. Variations in receiver hysteresis, data rate, and extended temperature ranges represent enhanced or alternative specifications that do not preclude functional substitution within the defined operating parameters.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Duplex | Drivers/Receivers | Package | Supply Voltage | Operating Temp | Receiver Hysteresis | Data Rate | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| DS3696AM/NOPB | Texas Instruments | RS422, RS485 | Half | 1/1 | 8-SOIC | 4.75V ~ 5.25V | 0°C ~ 70°C | 70 mV | — | Discontinued |
| ADM3483ARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 250kbps | Active |
| ADM3483ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 250kbps | Active |
| ADM3483EARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 250kbps | Active |
| ADM3485ARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 10Mbps | Active |
| ADM3485ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 10Mbps | Active |
| ADM3493ARZ | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 250kbps | Active |
| ADM3493ARZ-REEL7 | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 250kbps | Active |
| ISL3179EFBZ | Renesas Electronics Corporation | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 125°C | 28 mV | 40Mbps | Active |
| ISL3179EIBZ-T | Renesas Electronics Corporation | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 28 mV | 40Mbps | Active |
| ISL43485IBZ | Renesas Electronics Corporation | RS422, RS485 | Half | 1/1 | 8-SOIC | 3V ~ 3.6V | -40°C ~ 85°C | 50 mV | 50Mbps | Active |
Engineering Selection Recommendations
All listed substitute parts maintain ROHS3 compliance and EAR99 classification consistent with the original DS3696AM/NOPB specification. The substitute devices are currently in active production status, ensuring long-term availability and supply chain continuity.
Analog Devices ADM3483/ADM3485/ADM3493 series: These parts operate at 3V to 3.6V supply voltage, requiring circuit-level voltage adjustment from the original 4.75V to 5.25V specification. The ADM3485 variants offer 10Mbps data rate capability, while ADM3483 and ADM3493 variants support 250kbps operation. Packaging options include tube and cut tape with Digi-Reel formats. Moisture sensitivity level is reduced to 1 (unlimited), improving handling and storage characteristics.
Renesas ISL3179 series: These parts support extended operating temperature ranges up to 125°C (ISL3179EFBZ) or 85°C (ISL3179EIBZ-T) and deliver 40Mbps data rate performance. Receiver hysteresis is specified at 28 mV, lower than the original 70 mV specification. Moisture sensitivity level is 3 (168 Hours), matching the original part.
Renesas ISL43485IBZ: This part provides the highest data rate at 50Mbps with 50 mV receiver hysteresis. Operating temperature range is -40°C to 85°C with moisture sensitivity level 3 (168 Hours).
Frequently Asked Questions (FAQ)
Q: Can the ADM3483/ADM3485/ADM3493 series directly replace the DS3696AM/NOPB without circuit modifications?
A: No. The Analog Devices parts operate at 3V to 3.6V supply voltage, while the DS3696AM/NOPB requires 4.75V to 5.25V. Circuit-level voltage regulation or power supply adjustment is necessary for functional substitution.
Q: What is the significance of receiver hysteresis differences between the original part and substitutes?
A: Receiver hysteresis determines the voltage differential required to switch the receiver output state. The DS3696AM/NOPB specifies 70 mV hysteresis. Substitute parts with lower hysteresis values (28 mV to 50 mV) provide faster switching response but may require signal integrity assessment in noise-sensitive applications.
Q: Are the cut tape and Digi-Reel packaging options functionally equivalent to tube packaging?
A: Yes. Cut tape (CT) and Digi-Reel packaging formats contain identical die and electrical specifications. Packaging selection is determined by assembly process requirements and volume considerations, not functional performance.
Q: Does the extended operating temperature range of ISL3179EFBZ (-40°C to 125°C) affect compatibility with the original 0°C to 70°C specification?
A: No. Extended temperature range represents enhanced capability. The ISL3179EFBZ operates correctly within the original 0°C to 70°C window and supports additional temperature extremes if required by future applications.
Q: What is the impact of moisture sensitivity level differences on component handling?
A: The original DS3696AM/NOPB specifies MSL 3 (168 hours), requiring bake-out procedures if exposed to moisture beyond the specified time window. Analog Devices substitutes specify MSL 1 (unlimited), eliminating moisture sensitivity constraints. Renesas ISL3179 and ISL43485 parts maintain MSL 3 specification, requiring equivalent handling protocols to the original part.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and EAR99 classification, consistent with the original DS3696AM/NOPB specification.
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