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Texas Instruments TLC2543IN — Discrete Semiconductors

TLC2543IN 12-bit SAR ADC, 11-channel, SPI, DIP-20

MPNTLC2543IN
End of Life

Texas Instruments TLC2543IN, 12-bit SAR ADC, 11 single-ended inputs, SPI data interface, 66 kS/s sampling rate, 5V supply, -40°C to 85°C, 20-PDIP tube.

$16.16Ref. price · indicative, final on quote
Texas Instruments TLC2543IN datasheet (PDF)
Packaging20-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLC2543IN specifications
ParameterValue
Input typeSingle Ended
MountingThrough Hole
Reference typeExternal
Voltage - supply, analog5V
Voltage - supply, digital5V
I/O channels11
Data interfaceSPI
Operating temperature-40°C ~ 85°C
PackageTube
ArchitectureSAR
ConfigurationMUX-S/H-ADC
Number of bits12
Case20-DIP (0.300\", 7.62mm)
Ratio - s (H:ADC)1:1
Number of a (D converters)1
Sampling rate (Per second)66k

Product details

What this 12-bit SAR ADC brings to a multi-sensor board

The TLC2543IN: 12-bit SAR ADC, 11 single-ended inputs via integrated mux, SPI interface, 5V supply, 66 kS/s, 20-pin DIP.

Industrial temperature range and through-hole package

The 20-pin PDIP package is socket-friendly and easy to hand-rework — a real advantage during prototyping or when a field-service tech needs to swap a suspect ADC without hot-air gear. Tube shipment is the norm for DIP parts; if your pick-and-place line expects tape, this isn't it.

It's still a valid choice for a production BOM freeze or a new design where through-hole assembly is acceptable. ROHS3 compliant, so it passes modern environmental requirements without a waiver.

Frequently asked questions

Is TLC2543IN obsolete or active?

The TLC2543IN is active in its lifecycle. No end-of-life notice is in effect, and it remains a viable choice for both new designs and ongoing production.

What is the resolution of TLC2543IN?

The TLC2543IN is a 12-bit ADC. At a 5V reference, each LSB represents about 1.22 mV (5V / 4096). That resolution is well matched to 0.1% sensor spans and 10-bit-or-better control loops.

What is the closest functional equivalent to TLC2543IN?

The ADS1285IRHBT is a different class of part — 32-bit sigma-delta, differential inputs, surface-mount, 4 kS/s. It is not a pin-compatible or drop-in replacement for the TLC2543IN. No direct second-source alternate is listed in the available records.

Can TLC2543IN replace TLC2543?

The TLC2543IN is the through-hole DIP variant of the TLC2543 family. It shares the same 12-bit SAR core, 11-channel mux, SPI interface, and 5V supply. The 'IN' suffix indicates the industrial temperature range (-40°C to 85°C) and PDIP package. If your existing BOM uses a TLC2543 in a DIP-20 socket, the TLC2543IN is a functional match.