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Analog Devices MAX9742ETX+ — Memory (DRAM / SRAM / Flash / EEPROM)
Analog Devices

MAX9742ETX+ Class D Audio Amp, 20.5W x 2 @ 8Ω, 36-TQFN

MPNMAX9742ETX+
End of Life

Maxim Integrated MAX9742ETX+, Class D stereo audio amplifier, 20.5W x 2 @ 8Ω, 20V–40V supply, -40°C to 85°C, 36-TQFN exposed pad, ROHS3 compliant.

$5.11Ref. price · indicative, final on quote
MAX9742ETX+ datasheet
Packaging36-WFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX9742ETX+ Technical Specifications
ParameterValue
TypeClass D
Output type2-Channel (Stereo)
Mounting typeSurface Mount
Voltage20V ~ 40V, ±10V ~ 20V
Max output power x channels @ load20.5W x 2 @ 8Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FeaturesDepop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Case36-WFQFN Exposed Pad

Product details

Class D stereo amplifier rated 20.5 W per channel into 8 Ω

The Maxim Integrated MAX9742ETX+ is a Class D stereo audio amplifier delivering 20.5 W per channel into an 8 Ω load. It operates from a single 20 V to 40 V supply or a split ±10 V to ±20 V rail, suiting it for powered speakers, automotive audio, and industrial sound systems where efficiency and heat dissipation matter. The 36-TQFN (6x6 mm) exposed-pad package aids thermal management in compact enclosures. On-chip features include differential inputs, mute, shutdown, and short-circuit and thermal protection — reducing external component count for a clean BOM.

20.5 W per channel — what it means for your speaker load

20.5 W into 8 Ω per channel. Class D topology keeps quiescent losses low.

Supply flexibility and temperature grade

20 V to 40 V single-supply or ±10 V to ±20 V split supply. Rated -40°C to 85°C ambient.

Active lifecycle — no LTB risk for new designs

Active lifecycle status and ROHS3 compliant. No last-time-buy or end-of-life notice.

Frequently asked questions

What is the output power of MAX9742ETX+?

The MAX9742ETX+ delivers 20.5 W per channel into an 8 Ω load in stereo mode.

Is MAX9742ETX+ RoHS compliant?

Yes, it is ROHS3 compliant.

Where can I buy MAX9742ETX+ and get a price?

This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time.

What is the closest pin-compatible alternative to MAX9742ETX+?

Within the same Class D stereo amplifier family, parts like the MAX9744 share a similar 36-TQFN footprint and supply range, but verify the output power and feature set against your load requirements.