SN75ALS195N Equivalent & Substitute Parts

Part Overview

The SN75ALS195N is a 0/4 Receiver IC for RS422 and RS423 protocols, manufactured by Texas Instruments in a 16-DIP through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing system support. The receiver features 120 mV hysteresis and operates within a 4.75V to 5.25V supply voltage range across a 0°C to 70°C temperature range.

Substiute Parts

SN75ALS195N

Texas InstrumentsIn Stock: 2065SN75ALS195N Datasheet

Current PartRFQ

SN65LBC175ADR

Texas InstrumentsIn Stock: 3102SN65LBC175ADR Datasheet

MFR RecommendedRFQ

SN75ALS193N

Texas InstrumentsIn Stock: 9892SN75ALS193N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN75ALS195N is determined by the following critical parameters:

• Protocol compatibility: RS422 and RS423 support
• Receiver configuration: 0/4 (4 receivers, 0 drivers)
• Supply voltage range: 4.75V ~ 5.25V
• Receiver hysteresis: 120 mV
• Operating temperature range: 0°C ~ 70°C
• Package type: 16-DIP through-hole mounting

Two substitute categories are identified:

Parametric Equivalent (SN75ALS193N): Maintains identical electrical specifications and through-hole DIP packaging, providing direct form-fit-function replacement with active product status.

Manufacturer Recommended Substitute (SN65LBC175ADR): Offers extended protocol support (RS422, RS423, RS485), improved data rate capability (50 Mbps), and wider operating temperature range (-40°C ~ 85°C), but requires surface-mount assembly and package redesign.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No PCB Redesign): Select SN75ALS193N when maintaining existing through-hole DIP assembly is required. This parametric equivalent provides identical electrical performance and package form factor. The active product status ensures long-term availability and supply chain stability compared to the obsolete SN75ALS195N.

For New Designs or PCB Redesign: Select SN65LBC175ADR when PCB layout modifications are acceptable. This manufacturer-recommended substitute offers extended protocol support (RS485 addition), improved receiver hysteresis (40 mV vs. 120 mV), specified data rate capability (50 Mbps), and expanded operating temperature range (-40°C ~ 85°C). Surface-mount SOIC packaging reduces board space and supports modern manufacturing processes. Active product status provides superior long-term availability.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SN75ALS193N be used as a direct drop-in replacement for SN75ALS195N? A: Yes. The SN75ALS193N is a parametric equivalent with identical receiver hysteresis (120 mV), supply voltage range (4.75V ~ 5.25V), operating temperature (0°C ~ 70°C), and 16-DIP package configuration. No circuit modifications are required.

Q: What are the key differences between SN75ALS193N and SN65LBC175ADR? A: The primary differences are mounting type (through-hole DIP vs. surface-mount SOIC), receiver hysteresis (120 mV vs. 40 mV), operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), and protocol support (RS422/RS423 vs. RS422/RS423/RS485). The SN65LBC175ADR also specifies a 50 Mbps data rate.

Q: Does SN65LBC175ADR require PCB modifications? A: Yes. The SN65LBC175ADR uses 16-SOIC surface-mount packaging versus the 16-DIP through-hole package of the SN75ALS195N. PCB layout and assembly process changes are necessary.

Q: Are all three parts RoHS compliant? A: Yes. SN75ALS195N, SN75ALS193N, and SN65LBC175ADR are all ROHS3 compliant and REACH unaffected.

Q: Which substitute should be selected for extended temperature applications? A: The SN65LBC175ADR supports -40°C ~ 85°C operating temperature, compared to 0°C ~ 70°C for both SN75ALS195N and SN75ALS193N. Selection depends on whether PCB redesign is feasible.

Q: Is the SN75ALS195N still available? A: The SN75ALS195N is classified as obsolete. For new procurement, SN75ALS193N (active status, 9828 pcs in stock) or SN65LBC175ADR (active status, 3000 pcs in stock) are recommended.