2 layers276.9 × 142.2 mm
Overview
The TM1638 is a digital Tube Driver made by TM in a SOIC-28-300mil package with 28 pins. -40℃~+80℃ 10 Segment x 8 Digit 1MHz 20mA 4.5V~5.5V 400mW 80mA Adjustable Glow、Key Scan、Common Cathode、Common Anode SOIC-28-300mil Digital Tube Drivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:TM1638N-SOP28-TA1319B, from EasyEDA) and its footprint (Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 7,021 are in stock at JLCPCB (part C19187). 6 open-source boards in 5 repositories on GitHub use it.
Symbol
Footprint
Parameters
8- Clock Frequency
- 1MHz
- Configuration
- 10 Segment x 8 Digit
- Digit Drive Current
- 80mA
- Features
- PWM dimming
- Operating Temperature
- -40℃~+80℃
- Pd - Power Dissipation
- 400mW
- Segment Drive Current
- 20mA
- Voltage - Supply
- 4.5V~5.5V
Order codes
3- TM1638LCSC C19187
- TM1638LCSC C20611979
- TM1638LCSC C7464061
Pinout
28| Pin | Name | Type |
|---|---|---|
| 1 | K1 | Unspecified |
| 2 | K2 | Unspecified |
| 3 | K3 | Unspecified |
| 4 | VCC | Unspecified |
| 5 | SEG1/KS1 | Unspecified |
| 6 | SEG2/KS2 | Unspecified |
| 7 | SEG3/KS3 | Unspecified |
| 8 | SEG4/KS4 | Unspecified |
| 9 | SEG5/KS5 | Unspecified |
| 10 | SEG6/KS6 | Unspecified |
| 11 | SEG7/KS7 | Unspecified |
| 12 | SEG8/KS8 | Unspecified |
| 13 | SEG9 | Unspecified |
| 14 | SEG10 | Unspecified |
| 15 | VDD | Unspecified |
| 16 | GRID8 | Unspecified |
| 17 | GRID7 | Unspecified |
| 18 | GND | Unspecified |
| 19 | GRID6 | Unspecified |
| 20 | GRID5 | Unspecified |
| 21 | GRID4 | Unspecified |
| 22 | GRID3 | Unspecified |
| 23 | GRID2 | Unspecified |
| 24 | GRID1 | Unspecified |
| 25 | GND | Unspecified |
| 26 | DIO | Unspecified |
| 27 | CLK | Unspecified |
| 28 | STB | Unspecified |
Open-source boards using it
All 6- 2 layers100 × 100 mm
Mcu
cs2dsb/coffee_assistant
Free and open source software distributed under the terms of both the [MIT License][lm] and the [Apache License 2.0][la].
168 parts10Apache-2.0 - 2 layers76.2 × 132.3 mm
Stm32 calc
georgsnarbuts/kalkulators
A mechanical-key calculator that also works as a numpad, designed and sold as a kit.
85 parts - 2 layers170 × 45 mm
- 2 layers450 × 120 mm
- 2 layers100 × 100 mm
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/tm/TM1638" title="TM1638 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/tm/TM1638.jpg" alt="TM1638" width="1200" height="900">[](https://pcbkit.io/parts/tm/TM1638)Questions
Is there a KiCad symbol and footprint for the TM1638?
Yes. The symbol is EasyEDA_Cloud:TM1638N-SOP28-TA1319B and the footprint Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the TM1638?
SOIC-28-300mil, with 28 pins. Its footprint is drawn on this page.
Where is the TM1638 datasheet?
TM publishes it: the Datasheet link on this page opens it.
Where can I order the TM1638?
JLCPCB lists it as part C19187, with 7,021 in stock; the sellers' links on this page open their listings.
What can replace the TM1638?
Parts like it in the library: the TM1640(TA2103) by TM, the TM1628A by TM, the GN1638 by GN Semic and the AIP1638 by Wuxi I-core Elec. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the TM1638?
6 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
TM1640(TA2103)
SOP-28-40℃~+85℃ 1MHz 4.5V~5.5V 400mW 45mA、60mA 8 Segment x 16 Digit 80mA Adjustable Glow、Common Cathode、Common Anode SOP-28 Digital Tube Drivers ROHSTMDigital Tube DriversTM1628A
SOIC-28-300mil-40℃~+80℃ 10 Segment x 7 Digit、13 Segment x 4 Digit、12 Segment x 5 Digit、11 Segment x 6 Digit 1MHz 20mA 3V~6V 400mW 80mA Adjustable Glow、Key Scan、Common Cathode、Common Anode SOIC-28-300mil Digital Tube Drivers ROHSTMDigital Tube DriversGN1638
SOP-28-300mil-40℃~+85℃ 10 Segment x 8 Digit 1MHz 20mA 3V~5.5V 400mW 80mA Adjustable Glow、Key Scan、Common Cathode、Common Anode SOP-28-300mil Digital Tube Drivers ROHSGN SemicDigital Tube DriversAIP1638
SOP-28-300mil-20℃~+70℃ 10 Segment x 8 Digit 1MHz 20mA 3V~5.5V 400mW 80mA Adjustable Glow、Key Scan、Common Cathode、Common Anode SOP-28-300mil Digital Tube Drivers ROHSWuxi I-core ElecDigital Tube DriversTM1628
SOIC-28-300mil-40℃~+80℃ 10 Segment x 7 Digit、13 Segment x 4 Digit、12 Segment x 5 Digit、11 Segment x 6 Digit 1MHz 20mA 400mW 80mA Adjustable Glow、Key Scan、Common Cathode、Common Anode SOIC-28-300mil Digital Tube Drivers ROHSTMDigital Tube DriversTM1640
SOIC-28-300mil-40℃~+85℃ 1MHz 4.5V~5.5V 400mW 45mA、60mA 8 Segment x 16 Digit 80mA Adjustable Glow、Common Cathode SOIC-28-300mil Digital Tube Drivers ROHSTMDigital Tube DriversHTC1628
SOP-28SSOP-28 Digital Tube Drivers ROHSHITENXDigital Tube DriversHTM1640DR-TD
SOP-28-40℃~+85℃ 2.8V~5.5V 20mA 8 Segment x 16 Digit 80mA I²C PWM dimming、Internal reset function、Built-in auto blanking SOP-28 Digital Tube Drivers ROHSTDSEMICDigital Tube Drivers