ProjectsPricingInsights

Best Alternatives to TM1637

Package: SOP-20 / DIP-20Shenzhen Titan Micro Electronics Co., Ltd.OptoelectronicsDisplay Mode: 8 Segments x 6 DigitsKey Scan Matrix: 8 x 2 bitsInterface: 2-Wire Serial (CLK, DIO)Supply Voltage: 5V ± 10%Oscillator: Internal RC (450kHz)

TM1637 has no verified pin-compatible replacement in this review. Same-family parts may work only with PCB and firmware checks.

AI replacement insight

Electrical riskmedium

Voltage is partly matched; temp data is missing.

Package riskhigh

Kept candidates use 28 or 16 pins.

Firmware riskhigh

Display map and interface may differ.

Sourcing riskmedium

Only TM1638 is indexed here.

Can it be replaced directly?

No confirmed pin-compatible TM1637 replacement was found.

Best replacement path

Use TM1638 for redesigned boards, or TM1650 only for relaxed 4-digit 2-wire designs.

Main risk

Pinout, package, and serial protocol differ across candidates.

Recommended alternatives

1
TM1638 package
TM1638

TM(Shenzhen Titan Micro Elec)

Needs validationhigh risk

TM1638 is a same-vendor functional alternative for redesigned LED/key-scan boards.

View details

Alternative comparison matrix

Feature / factorTM1637TM1638Alt 2Alt 3Compatibility / risk
PackageSOP-20/DIP-20SOP28SOP28 — PCB change likely
Pinout20 pins28 pins28 pins — Not pin compatible
Interface2-wire CLK/DIO3-wire CLK/STB/DIO3-wire CLK/STB/DIO — Firmware change
Application8seg x6, 8x2 keys10seg x8, 8x3 keys10seg x8, 8x3 keys — Mode remap needed
Voltage5V ±10%5V5V — Nominal match

Application & sourcing insights

Questions & answers

TM1638 is the best indexed functional alternative, but it needs PCB and firmware redesign.