# TMDS261BPAG

**Texas Instruments** · Video Interface ICs · TQFP-64(10x10)

TMDS261BPAG from Texas Instruments, in a TQFP-64(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No-connect pin; leave unconnected. |
| 2 | NC | unconnected | No-connect pin; leave unconnected. |
| 3 | GND | power_in | Ground pin for the device. |
| 4 | NC | unconnected | No-connect pin; leave unconnected. |
| 5 | NC | unconnected | No-connect pin; leave unconnected. |
| 6 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 7 | NC | unconnected | No-connect pin; leave unconnected. |
| 8 | NC | unconnected | No-connect pin; leave unconnected. |
| 9 | GND | power_in | Ground pin for the device. |
| 10 | NC | unconnected | No-connect pin; leave unconnected. |
| 11 | NC | unconnected | No-connect pin; leave unconnected. |
| 12 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 13 | NC | unconnected | No-connect pin; leave unconnected. |
| 14 | NC | unconnected | No-connect pin; leave unconnected. |
| 15 | GND | power_in | Ground pin for the device. |
| 16 | VSadj | input | TMDS-compliant voltage swing control; a 4.02 kΩ ±10% resistor is selected to pass voltage HDMI compliance. |
| 17 | D2+_SINK | output | Sink-side TMDS data channel 2 positive differential output. |
| 18 | D2-_SINK | output | Sink-side TMDS data channel 2 negative differential output. |
| 19 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 20 | D1+_SINK | output | Sink-side TMDS data channel 1 positive differential output. |
| 21 | D1-_SINK | output | Sink-side TMDS data channel 1 negative differential output. |
| 22 | GND | power_in | Ground pin for the device. |
| 23 | D0+_SINK | output | Sink-side TMDS data channel 0 positive differential output. |
| 24 | D0-_SINK | output | Sink-side TMDS data channel 0 negative differential output. |
| 25 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 26 | CLK+_SINK | output | TMDS sink-side differential clock positive output. |
| 27 | CLK-_SINK | output | TMDS sink-side differential clock negative output. |
| 28 | GND | power_in | Ground pin for the device. |
| 29 | SCL_SINK | bidirectional | TMDS sink-side bidirectional DDC clock. |
| 30 | SDA_SINK | bidirectional | TMDS sink-side bidirectional DDC data. |
| 31 | HPD_SINK | input | Sink hot-plug-detect input; in standby mode HPD1 and HPD2 follow this pin. |
| 32 | S1/SCL | input | Source select 1 (GPIO mode) or local I2C clock (I2C mode), selected by the I2C_SEL pin. |
| 33 | S2/SDA | bidirectional | Source select 2 (GPIO mode) or local I2C data (I2C mode), selected by the I2C_SEL pin. |
| 34 | I2C_SEL | input | GPIO/local I2C control select: High configures the device by GPIO logic, Low configures it by I2C logic. |
| 35 | HPD1 | output | Source port 1 hot-plug-detect output. |
| 36 | SDA1 | bidirectional | Port-1 TMDS bidirectional DDC data. |
| 37 | SCL1 | bidirectional | Port-1 TMDS bidirectional DDC clock. |
| 38 | CLK-_1 | input | Port-1 TMDS differential clock negative input. |
| 39 | CLK+_1 | input | Port-1 TMDS differential clock positive input. |
| 40 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 41 | D0-_1 | input | Port-1 TMDS differential data 0 negative input. |
| 42 | D0+_1 | input | Port-1 TMDS differential data 0 positive input. |
| 43 | GND | power_in | Ground pin for the device. |
| 44 | D1-_1 | input | Port-1 TMDS differential data 1 negative input. |
| 45 | D1+_1 | input | Port-1 TMDS differential data 1 positive input. |
| 46 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 47 | D2-_1 | input | Port-1 TMDS differential data 2 negative input. |
| 48 | D2+_1 | input | Port-1 TMDS differential data 2 positive input. |
| 49 | LP | input | Low-power select bar: High selects normal operation, Low forces the device into the low-power state. |
| 50 | HPD2 | output | Source port 2 hot-plug-detect output. |
| 51 | SDA2 | bidirectional | Port-2 TMDS bidirectional DDC data. |
| 52 | SCL2 | bidirectional | Port-2 TMDS bidirectional DDC clock. |
| 53 | CLK-_2 | input | Port-2 TMDS differential clock negative input. |
| 54 | CLK+_2 | input | Port-2 TMDS differential clock positive input. |
| 55 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 56 | D0-_2 | input | Port-2 TMDS differential data 0 negative input. |
| 57 | D0+_2 | input | Port-2 TMDS differential data 0 positive input. |
| 58 | GND | power_in | Ground pin for the device. |
| 59 | D1-_2 | input | Port-2 TMDS differential data 1 negative input. |
| 60 | D1+_2 | input | Port-2 TMDS differential data 1 positive input. |
| 61 | VCC | power_in | 3.3-V supply pin for the TMDS circuitry, HPD, DDC and most of the control logic. |
| 62 | D2-_2 | input | Port-2 TMDS differential data 2 negative input. |
| 63 | D2+_2 | input | Port-2 TMDS differential data 2 positive input. |
| 64 | NC | unconnected | No-connect pin; leave unconnected. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TQFP-64(10x10) |
| Category | Interface |
| Pins | 64 |

## CAD (KiCad official)

- Symbol: `TMDS261BPAG`
- Footprint: `Package_QFP:TQFP-64_10x10mm_P0.5mm`
- 3D model: TQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files: `tmds261bpag-etched.step` / `tmds261bpag-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmds261bpag.step` / `tmds261bpag.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tmds261b) (50 pp, sha256 `04744a4640e5eb60`, retrieved 2026-10-10, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tmds261bpag-datasheet.pdf)