# 6PAIC3254IRHBRQ1

**Texas Instruments** · Audio Interface ICs · VQFN-32(5x5)

6PAIC3254IRHBRQ1 from Texas Instruments, in a VQFN-32(5x5). 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 | MCLK | input | Master clock input. |
| 2 | BCLK | bidirectional | Audio serial data bus (primary) bit clock. |
| 3 | WCLK | bidirectional | Audio serial data bus (primary) word clock. |
| 4 | DIN/MFP1 | input | Audio serial data bus data input (primary); secondary functions are digital microphone input, general purpose clock input and general purpose input. |
| 5 | DOUT/MFP2 | output | Audio serial data bus data output (primary); secondary functions include general purpose output, clock output, INT1/INT2 output and secondary I2S bit/word clock outputs. |
| 6 | IOVDD | power_in | IO voltage supply, 1.1V to 3.6V. |
| 7 | IOVSS | power_in | IO ground supply. |
| 8 | SCLK/MFP3 | input | SPI serial clock when SPI_Select = 1; with SPI_Select = 0 secondary functions include headphone-detect input, digital microphone input, secondary I2S inputs and general purpose input. |
| 9 | SCL/SS | input | I2C serial clock (SPI_Select = 0) or SPI chip-select (SPI_Select = 1). |
| 10 | SDA/MOSI | input | I2C serial data input (SPI_Select = 0) or SPI serial data input (SPI_Select = 1). |
| 11 | MISO/MFP4 | output | SPI serial data output when SPI_Select = 1; with SPI_Select = 0 secondary functions include general purpose output, CLKOUT, INT1/INT2, ADC word clock output, digital microphone clock output and secondary I2S outputs. |
| 12 | SPI_SELECT | input | Control mode select pin (1 = SPI, 0 = I2C). |
| 13 | IN1_L | input | Multifunction analog input; single-ended MIC 1 or Line 1 left, or differential MIC/Line negative input. |
| 14 | IN1_R | input | Multifunction analog input; single-ended MIC 1 or Line 1 right, or differential MIC/Line positive input. |
| 15 | IN2_L | input | Multifunction analog input; single-ended MIC 2 or Line 2, or differential MIC/Line left positive input. |
| 16 | IN2_R | input | Multifunction analog input; single-ended MIC 2 or Line 2 right, or differential MIC/Line left negative input. |
| 17 | AVSS | power_in | Analog ground supply. |
| 18 | REF | output | Reference voltage output for filtering. |
| 19 | MICBIAS | output | Microphone bias voltage output. |
| 20 | IN3_L | input | Multifunction analog input; single-ended MIC3 or Line 3 left, or differential MIC/Line left positive or right negative input. |
| 21 | IN3_R | input | Multifunction analog input; single-ended MIC3 or Line 3 right, or differential MIC/Line left negative or right positive input. |
| 22 | LOL | output | Left line output, drives line loads of 600 ohm to 10 kohm. |
| 23 | LOR | output | Right line output, drives line loads of 600 ohm to 10 kohm. |
| 24 | AVDD | power_in | Analog voltage supply 1.5V to 1.95V; input when A-LDO is disabled, filtering output when A-LDO is enabled. |
| 25 | HPL | output | Left high power output driver. |
| 26 | LDOIN/HPVDD | power_in | LDO input supply and headphone power supply, 1.9V to 3.6V. |
| 27 | HPR | output | Right high power output driver. |
| 28 | DVSS | power_in | Digital ground and chip substrate. |
| 29 | DVDD | power_in | Digital voltage supply 1.26V to 1.95V when LDO_SELECT = 0 (D-LDO disabled); filtering output when LDO_SELECT = 1 (D-LDO enabled). |
| 30 | LDO_SELECT | input | Digital LDO select: 0 disables the D-LDO, 1 enables it (table text also says 'connect to DVss'). |
| 31 | RESET | input | Reset, active low. |
| 32 | GPIO/MFP5 | bidirectional | General purpose digital IO (primary); secondary functions include CLKOUT, INT1/INT2 output, ADC word clock, secondary I2S clocks and digital microphone clock output. |
| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-32(5x5) |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 33 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| AVDD to AVSS | AVDD | -0.3 |  | 2.2 | V |  | 7 |
| DVDD to DVSS | DVDD | -0.3 |  | 2.2 | V |  | 7 |
| IOVDD to IOVSS | IOVDD | -0.3 |  | 3.9 | V |  | 7 |
| LDOIN to AVSS | LDOIN | -0.3 |  | 3.9 | V |  | 7 |
| Operating temperature range |  | -40 |  | 85 | °C |  | 7 |
| Storage temperature range |  | -55 |  | 125 | °C |  | 7 |
| Junction temperature | TJ Max |  |  | 105 | °C |  | 7 |
| LDOIN supply voltage | LDOIN | 1.9 |  | 3.6 | V | Referenced to AVSS | 7 |
| AVDD supply voltage | AVDD | 1.5 | 1.8 | 1.95 | V | Referenced to AVSS | 7 |
| IOVDD supply voltage | IOVDD | 1.1 |  | 3.6 | V | Referenced to IOVSS | 7 |
| DVDD supply voltage | DVDD | 1.26 | 1.8 | 1.95 | V | Referenced to DVSS | 7 |
| Operating Temperature Range | TOPR | -40 |  | 85 | °C |  | 7 |
| Junction-to-ambient thermal resistance | θJA |  | 31.4 |  | °C/W | RHB (32 pins) | 8 |
| Junction-to-case (top) thermal resistance | θJCtop |  | 21.4 |  | °C/W | RHB (32 pins) | 8 |
| Junction-to-board thermal resistance | θJB |  | 5.4 |  | °C/W | RHB (32 pins) | 8 |
| LDO output voltage accuracy (AVdd) |  | -2 |  | 2 | % |  | 15 |
| LDO output voltage accuracy (DVdd) |  | -2 |  | 2 | % |  | 15 |
| VIL low-level input voltage | VIL | -0.3 |  |  | V | IIL = 5 μA, IOVDD > 1.6V (max 0.3 × IOVDD) | 17 |
| Maximum miniDSP clock frequency - ADC |  |  | 55.3 |  | MHz | DVDD = 1.65V | 16 |

## CAD (KiCad official)

- Symbol: `6PAIC3254IRHBRQ1`
- Footprint: `Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm`
- 3D model: VQFN-32(5x5) (KiCad packages3D, STEP)
- 3D model files: `6paic3254irhbrq1-etched.step` / `6paic3254irhbrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `6paic3254irhbrq1.step` / `6paic3254irhbrq1.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/tlv320aic3254-q1) (49 pp, sha256 `c108b0a6db5178e4`, retrieved 2026-10-27, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/6paic3254irhbrq1-datasheet.pdf)