TLC1543ING4 Equivalent & Substitute Parts

Part Overview

The TLC1543ING4 is a 10-bit Analog to Digital Converter (ADC) with 11 single-ended inputs, utilizing a Successive Approximation Register (SAR) architecture. This component operates at a sampling rate of 38 kSPS with external voltage reference capability and SPI data interface. The part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain functional and electrical compatibility for ongoing production and maintenance applications.

Substiute Parts

TLC1543ING4

Texas InstrumentsIn Stock: 864TLC1543ING4 Datasheet

Current PartRFQ

TLC1543IN

Texas InstrumentsIn Stock: 5289TLC1543IN Datasheet

MFR RecommendedRFQ

TLC1542IN

Texas InstrumentsIn Stock: 930TLC1542IN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC1543ING4 is determined by strict equivalence across the following critical parameters:

• 10-bit resolution
• 11 single-ended input channels
• 38 kSPS sampling rate
• SAR architecture
• External reference configuration
• SPI serial data interface
• 5V analog and digital supply voltages
• 20-DIP package format
• -40°C to 85°C operating temperature range
• ROHS3 compliance

The TLC1543IN and TLC1542IN meet all electrical and mechanical specifications required for direct substitution. Both parts maintain identical functional parameters and package compatibility with the discontinued TLC1543ING4.

Parameter Comparison

Engineering Selection Recommendations

Both TLC1543IN and TLC1542IN are qualified substitutes for the TLC1543ING4. Selection between these alternatives should be based on availability and supply chain status:

TLC1543IN is designated as the manufacturer-recommended substitute, with higher current inventory (5262 pcs) and Last Time Buy status, providing extended procurement window for design transitions.

TLC1542IN offers parametric equivalence with 897 pcs in stock and Last Time Buy status, suitable for applications where supply continuity is required.

Both parts maintain ROHS3 compliance and identical electrical specifications. Packaging format (20-PDIP) ensures direct board-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can TLC1543IN be used as a direct replacement for TLC1543ING4?

A: Yes. The TLC1543IN maintains identical electrical specifications, pin configuration, and package format. No circuit modifications are required for substitution.

Q: What is the difference between TLC1543IN and TLC1542IN?

A: Both parts are parametrically equivalent with identical resolution, input count, sampling rate, and package specifications. The primary difference is base product number designation (TLC1543 vs TLC1542) and current inventory levels.

Q: Are there any compliance or certification differences between these parts?

A: All three parts (TLC1543ING4, TLC1543IN, TLC1542IN) are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: What packaging format is used for these parts?

A: All parts use 20-DIP (0.300", 7.62mm) through-hole packaging. This format is consistent across the main part and all substitutes.

Q: Why is the TLC1543ING4 discontinued?

A: The TLC1543ING4 has been discontinued at DiGi Electronics. Equivalent alternatives (TLC1543IN and TLC1542IN) remain available under Last Time Buy status.