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DS36276M RS422/RS485 Half Transceiver Equivalent & Substitute Parts
Part Overview
The DS36276M is a half-duplex RS422/RS485 transceiver manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This part operates within a 4.75V to 5.25V supply voltage range with a 50 mV receiver hysteresis specification. The DS36276M is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | DS36276M Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Duplex Configuration | Half |
| Number of Drivers/Receivers | 1/1 |
| Receiver Hysteresis | 50 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 |
| RoHS Status | RoHS non-compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DS36276M is determined by the following critical parameters:
- Protocol compatibility: RS422 and/or RS485 support
- Duplex configuration: Half-duplex operation
- Driver/Receiver count: 1 driver and 1 receiver
- Package type: 8-SOIC surface mount form factor
- Supply voltage range: Compatibility with 4.75V ~ 5.25V or broader ranges that encompass this specification
- Receiver hysteresis: 50 mV or equivalent threshold performance
- Operating temperature: Minimum coverage of 0°C ~ 70°C range
Substitute parts are grouped into two categories: manufacturer-recommended direct replacements from Texas Instruments and parametric equivalents from alternative manufacturers that meet the core electrical and mechanical requirements.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Duplex | Drivers/Receivers | Supply Voltage | Operating Temp | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| DS36276M | Texas Instruments | RS422, RS485 | Half | 1/1 | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete | RoHS non-compliant |
| SN75176BD | Texas Instruments | RS422, RS485 | Half | 1/1 | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete | ROHS3 Compliant |
| SN75176AD | Texas Instruments | RS422, RS485 | Half | 1/1 | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete | ROHS3 Compliant |
| SN75176ADG4 | Texas Instruments | RS422, RS485 | Half | 1/1 | 4.75V ~ 5.25V | 0°C ~ 70°C | 8-SOIC | Obsolete | ROHS3 Compliant |
| HI-4853PSHF | Holt Integrated Circuits Inc. | RS422, RS485 | Half | 1/1 | 3.15V ~ 5.5V | -55°C ~ 175°C | 8-SOIC | Active | ROHS3 Compliant |
| ISL3179EFBZ | Renesas Electronics Corporation | RS422, RS485 | Half | 1/1 | 3V ~ 3.6V | -40°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| ISL3179EFBZ-T | Renesas Electronics Corporation | RS422, RS485 | Half | 1/1 | 3V ~ 3.6V | -40°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| LT1785AIS8#TRPBF | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 4.75V ~ 5.25V | -40°C ~ 85°C | 8-SOIC | Active | ROHS3 Compliant |
| LTC2862MPS8-1#PBF | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 3V ~ 5.5V | -55°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| LTC2862MPS8-1#TRPBF | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 3V ~ 5.5V | -55°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
| LTC2862MPS8-2#PBF | Analog Devices Inc. | RS422, RS485 | Half | 1/1 | 3V ~ 5.5V | -55°C ~ 125°C | 8-SOIC | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For designs currently using the DS36276M, the following selection criteria apply:
Texas Instruments Direct Replacements: SN75176BD, SN75176AD, and SN75176ADG4 maintain identical electrical specifications and 8-SOIC packaging. All three are ROHS3 compliant, addressing regulatory requirements where the original DS36276M does not. These parts are classified as obsolete but remain the closest functional equivalents.
Active Production Alternatives: HI-4853PSHF (Holt Integrated Circuits Inc.), ISL3179EFBZ and ISL3179EFBZ-T (Renesas Electronics Corporation), and the LTC2862 series (Analog Devices Inc.) are all in active production status. These parts support RS422/RS485 half-duplex operation with 1/1 driver/receiver configuration in 8-SOIC packages.
Supply Voltage Considerations: The HI-4853PSHF and LTC2862 series support broader supply voltage ranges (3.15V ~ 5.5V and 3V ~ 5.5V respectively), providing design flexibility beyond the DS36276M's 4.75V ~ 5.25V specification. The ISL3179 series operates at 3V ~ 3.6V and is suitable only for low-voltage applications.
Temperature Range: The HI-4853PSHF offers the widest operating temperature range (-55°C ~ 175°C), while LTC2862 variants support -55°C ~ 125°C. The LT1785AIS8#TRPBF provides -40°C ~ 85°C coverage. All exceed the DS36276M's 0°C ~ 70°C specification.
Compliance Status: All substitute parts listed are ROHS3 compliant, addressing environmental and regulatory requirements where the original part does not.
Frequently Asked Questions (FAQ)
Q: Can I directly replace DS36276M with SN75176BD without circuit modifications?
A: Yes. SN75176BD maintains identical electrical specifications for supply voltage (4.75V ~ 5.25V), receiver hysteresis (50 mV), protocol support (RS422/RS485), duplex configuration (half), and 8-SOIC packaging. No circuit modifications are required.
Q: What is the primary difference between SN75176BD, SN75176AD, and SN75176ADG4?
A: All three parts are parametric equivalents with identical electrical specifications. The differences are in product dating and manufacturing batches. SN75176ADG4 includes a date code suffix. Selection among these three should be based on availability and packaging preference (tube vs. tape & reel).
Q: Can I use ISL3179EFBZ as a substitute if my design operates at 5V?
A: No. ISL3179EFBZ operates at 3V ~ 3.6V supply voltage and is not compatible with 5V systems. This part is suitable only for low-voltage applications.
Q: What are the advantages of HI-4853PSHF over the Texas Instruments options?
A: HI-4853PSHF is in active production (vs. obsolete status), supports a broader supply voltage range (3.15V ~ 5.5V), offers extended operating temperature range (-55°C ~ 175°C), and includes a 20 Mbps data rate specification. It is ROHS3 compliant.
Q: Are the LTC2862 variants suitable for 5V applications?
A: Yes. The LTC2862 series supports 3V ~ 5.5V supply voltage, encompassing the DS36276M's 4.75V ~ 5.25V range. All LTC2862 variants are in active production and ROHS3 compliant. Differences between LTC2862MPS8-1#PBF, LTC2862MPS8-1#TRPBF, and LTC2862MPS8-2#PBF relate to packaging (tube vs. tape & reel) and data rate specifications (20 Mbps vs. 250 kbps).
Q: Does packaging format (tube vs. tape & reel) affect electrical performance?
A: No. Packaging format affects only handling, storage, and automated assembly compatibility. Electrical specifications remain identical between tube and tape & reel variants of the same part number.
Q: Which substitute part offers the best long-term availability?
A: HI-4853PSHF, ISL3179EFBZ-T, and the LTC2862 series are all in active production status, providing superior long-term availability compared to the obsolete DS36276M and Texas Instruments SN75176 variants.
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