TAS5421QPWPRQ1

Texas Instruments · Audio Power OpAmps · HTSSOP-16-EP

TAS5421QPWPRQ1 from Texas Instruments, in a HTSSOP-16-EP. 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	GND	power_in	Device ground reference; datasheet lists pins 1, 9 and 16 as ground.
2	STANDBY	input	Active-low STANDBY input with no internal pullup or pulldown, so an unused pin must be tied to a low-voltage rail such as 3.3 V or 5 V through a high-impedance resistor.
3	BYP	passive	Voltage-regulator bypass pin requiring a 1 µF ±10% capacitor; the BYP pin voltage is stated as 6.4 V to 7.4 V.
4	SDA	bidirectional	I2C data line; with a 4.7 kΩ pullup it outputs at least 2.4 V high and at most 0.4 V low at 3 mA sink, and inputs above 2.1 V and below 1.1 V are logic high and low; connect to 3.3 V if no I2C master is used.
5	SCL	input	I2C clock input with logic-high input of 2.1 V to 5.5 V and logic-low input of at most 1.1 V, operating up to 400 kHz.
6	IN_P	input	Non-inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF.
7	IN_N	input	Inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF.
8	MUTE	input	Active-high mute input with no internal pullup or pulldown; if unused, connect it to GND through a high-impedance resistor.
9	GND	power_in	Device ground reference; datasheet lists pins 1, 9 and 16 as ground.
10	BSTN	passive	Bootstrap pin for the negative-output high-side FET, connected through a 220 nF ±20% capacitor to OUTN.
11	OUTN	power_out	Negative BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown.
12	OUTP	power_out	Positive BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown.
13	BSTP	passive	Bootstrap pin for the positive-output high-side FET, connected through a 220 nF ±20% capacitor to OUTP.
14	FAULT	output	Active-low open-drain fault output that reports faults; it reads at most 0.5 V low with a 47 kΩ pullup to 3.3 V and has a maximum sink current of 7 mA.
15	PVDD	power_in	Power supply input with a recommended operating range of 4.5 V to 18 V for a 4 Ω load and an absolute maximum DC rating of 30 V relative to GND.
16	GND	power_in	Device ground reference; datasheet lists pins 1, 9 and 16 as ground.
17	Thermal Pad	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	HTSSOP-16-EP
Category	Operational Amplifier/Comparator
Pins	17

CAD (KiCad official)

Symbol: TAS5421QPWPRQ1
Footprint: Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm
3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
3D model files: tas5421qpwprq1-etched.step / tas5421qpwprq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tas5421qpwprq1.step / tas5421qpwprq1.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (32 pp, sha256 98d5a60a363b9539, retrieved 2026-10-08, 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-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

# TAS5421QPWPRQ1

**Texas Instruments** · Audio Power OpAmps · HTSSOP-16-EP

TAS5421QPWPRQ1 from Texas Instruments, in a HTSSOP-16-EP. 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 | GND | power_in | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |
| 2 | STANDBY | input | Active-low STANDBY input with no internal pullup or pulldown, so an unused pin must be tied to a low-voltage rail such as 3.3 V or 5 V through a high-impedance resistor. |
| 3 | BYP | passive | Voltage-regulator bypass pin requiring a 1 µF ±10% capacitor; the BYP pin voltage is stated as 6.4 V to 7.4 V. |
| 4 | SDA | bidirectional | I2C data line; with a 4.7 kΩ pullup it outputs at least 2.4 V high and at most 0.4 V low at 3 mA sink, and inputs above 2.1 V and below 1.1 V are logic high and low; connect to 3.3 V if no I2C master is used. |
| 5 | SCL | input | I2C clock input with logic-high input of 2.1 V to 5.5 V and logic-low input of at most 1.1 V, operating up to 400 kHz. |
| 6 | IN_P | input | Non-inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF. |
| 7 | IN_N | input | Inverting analog audio input, internally biased to 3 V common mode and AC-coupled through an external series capacitor of 1 µF. |
| 8 | MUTE | input | Active-high mute input with no internal pullup or pulldown; if unused, connect it to GND through a high-impedance resistor. |
| 9 | GND | power_in | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |
| 10 | BSTN | passive | Bootstrap pin for the negative-output high-side FET, connected through a 220 nF ±20% capacitor to OUTN. |
| 11 | OUTN | power_out | Negative BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown. |
| 12 | OUTP | power_out | Positive BTL amplifier output, filtered with an LC low-pass filter; peak output current is limited to 3.5 A by overcurrent shutdown. |
| 13 | BSTP | passive | Bootstrap pin for the positive-output high-side FET, connected through a 220 nF ±20% capacitor to OUTP. |
| 14 | FAULT | output | Active-low open-drain fault output that reports faults; it reads at most 0.5 V low with a 47 kΩ pullup to 3.3 V and has a maximum sink current of 7 mA. |
| 15 | PVDD | power_in | Power supply input with a recommended operating range of 4.5 V to 18 V for a 4 Ω load and an absolute maximum DC rating of 30 V relative to GND. |
| 16 | GND | power_in | Device ground reference; datasheet lists pins 1, 9 and 16 as ground. |
| 17 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HTSSOP-16-EP |
| Category | Operational Amplifier/Comparator |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `TAS5421QPWPRQ1`
- Footprint: `Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files: `tas5421qpwprq1-etched.step` / `tas5421qpwprq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tas5421qpwprq1.step` / `tas5421qpwprq1.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/tas5421-q1) (32 pp, sha256 `98d5a60a363b9539`, retrieved 2026-10-08, 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-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/tas5421qpwprq1-datasheet.pdf)