component
TCAL6408PWR
Public Made by Adomby adom
Texas Instruments I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownTCAL6408PWR
Texas Instruments · I/O Expanders · TSSOP-16
TCAL6408PWR from Texas Instruments, in a TSSOP-16. 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 | VCCI | power_in | Supply voltage of the I2C bus; connect directly to the supply voltage of the external I2C controller. |
| 2 | ADDR | input | Address input; connect directly to VCCP or ground. |
| 3 | RESET | input | Active-low reset input; connect to VCCI through a pull-up resistor if no active connection is used. |
| 4 | P0 | bidirectional | P-port input/output (push-pull design structure); at power on, P0 is configured as an input. |
| 5 | P1 | bidirectional | P-port input/output (push-pull design structure); at power on, P1 is configured as an input. |
| 6 | P2 | bidirectional | P-port input/output (push-pull design structure); at power on, P2 is configured as an input. |
| 7 | P3 | bidirectional | P-port input/output (push-pull design structure); at power on, P3 is configured as an input. |
| 8 | GND | power_in | Ground. |
| 9 | P4 | bidirectional | P-port input/output (push-pull design structure); at power on, P4 is configured as an input. |
| 10 | P5 | bidirectional | P-port input/output (push-pull design structure); at power on, P5 is configured as an input. |
| 11 | P6 | bidirectional | P-port input/output (push-pull design structure); at power on, P6 is configured as an input. |
| 12 | P7 | bidirectional | P-port input/output (push-pull design structure); at power on, P7 is configured as an input. |
| 13 | INT | output | Interrupt output; connect to VCCI or VCCP through a pull-up resistor. |
| 14 | SCL | input | Serial clock bus; connect to VCCI through a pull-up resistor. |
| 15 | SDA | bidirectional | Serial data bus; connect to VCCI through a pull-up resistor. |
| 16 | VCCP | power_in | Supply voltage of the TCAL6408 for the P-ports. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Interface |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (VCCI, VCCP) | VCCI, VCCP | -0.5 | 4 | V | 4 | ||
| Input voltage | VI | -0.5 | 4 | V | 4 | ||
| Output voltage | VO | -0.5 | 4 | V | 4 | ||
| Input clamp current | IIK | -20 | mA | VI < 0 | 4 | ||
| Output clamp current | IOK | -20 | mA | VO < 0 | 4 | ||
| Input-output clamp current, P port | IIOK | -20 | 20 | mA | VO < 0 or VO > VCCP | 4 | |
| Input-output clamp current, SDA | IIOK | -20 | 20 | mA | VO < 0 or VO > VCCI | 4 | |
| Continuous output low current, P port | IOL | 50 | mA | VO = 0 to VCCP | 4 | ||
| Continuous output low current, SDA | IOL | 25 | mA | VO = 0 to VCCI | 4 | ||
| Continuous output high current, P port | IOH | -50 | mA | VO = 0 to VCCP | 4 | ||
| Continuous current through GND | ICC | -200 | mA | 4 | |||
| Continuous current through VCCP | ICC | 160 | mA | 4 | |||
| Continuous current through VCCI | ICC | 10 | mA | 4 | |||
| Junction temperature | TJ | 130 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Supply voltage (VCCI, VCCP) | VCCI, VCCP | 1.08 | 3.6 | V | 5 | ||
| High-level input voltage, SCL, SDA, RESET | VIH | 3.6 | V | 5 | |||
| High-level input voltage, P0-P7, ADDR | VIH | 3.6 | V | 5 | |||
| Low-level input voltage, SCL, SDA, RESET | VIL | -0.5 | V | 5 | |||
| Low-level input voltage, P0-P7, ADDR | VIL | -0.5 | V | 5 | |||
| High-level output current, P0-P7 | IOH | -10 | mA | 5 | |||
| Low-level output current, P0-P7 | IOL | 25 | mA | VOL ≤ 0.3 V | 5 | ||
| Ambient temperature | TA | -40 | 125 | °C | 5 | ||
| Junction temperature | TJ | 125 | °C | 5 | |||
| Input diode clamp voltage | VIK | -1.2 | V | II = -18 mA; VCCP 1.08 V to 3.6 V | 7 | ||
| Power-on reset voltage, VCC rising | VPORR | 0.85 | 1 | V | VI = VCC or GND, IO = 0 | 7 | |
| Power-on reset voltage, VCC falling | VPORF | 0.6 | 0.75 | V | VI = VCC or GND, IO = 0 | 7 | |
| P-port high-level output voltage, VCCP = 1.08 V | VOH | 0.8 | V | IOH = -8 mA; CC-XX = 11b | 7 | ||
| P-port high-level output voltage, VCCP = 1.65 V | VOH | 1.4 | V | IOH = -8 mA; CC-XX = 11b | 7 | ||
| P-port high-level output voltage, VCCP = 2.3 V | VOH | 2.1 | V | IOH = -8 mA; CC-XX = 11b | 7 | ||
| P-port high-level output voltage, VCCP = 3 V | VOH | 2.8 | V | IOH = -8 mA; CC-XX = 11b | 7 | ||
| P-port high-level output voltage, VCCP = 1.08 V | VOH | 0.75 | V | IOH = -2.5 mA (CC-XX 00b), -5 mA (01b), -7.5 mA (10b), -10 mA (11b) | 7 | ||
| P-port low-level output voltage, VCCP = 1.08 V | VOL | 0.2 | V | IOL = 8 mA; CC-XX = 11b | 7 | ||
| P-port low-level output voltage, VCCP = 1.65 V | VOL | 0.15 | V | IOL = 8 mA; CC-XX = 11b | 7 | ||
| P-port low-level output voltage, VCCP = 2.3 V | VOL | 0.1 | V | IOL = 8 mA; CC-XX = 11b | 7 | ||
| P-port low-level output voltage, VCCP = 3.0 V | VOL | 0.1 | V | IOL = 8 mA; CC-XX = 11b | 7 | ||
| P-port low-level output voltage, VCCP = 1.08 V | VOL | 0.25 | V | IOL = 2.5 mA (CC-XX 00b), 5 mA (01b), 7.5 mA (10b), 10 mA (11b) | 7 | ||
| Low-level output current, SDA | IOL | 20 | mA | VOL = 0.4 V | 7 | ||
| Input leakage current, P ports | II | -1 | 1 | µA | VI = VCC or GND; 1.08 V to 3.6 V | 7 | |
| Input leakage current, P ports (VCCP = 0 V) | II | -1 | 1 | µA | VI = 3.6 V; VCCP = 0 V | 7 | |
| Input leakage current, SCL, SDA, RESET | II | -1 | 1 | µA | VI = VCC or GND; 1.08 V to 3.6 V | 7 | |
| Input leakage current, ADDR | II | -1 | 1 | µA | VI = VCC or GND; 1.08 V to 3.6 V | 7 | |
| Quiescent current, operating mode 400 kHz, VCCP = 3.6 V | ICC | 7 | 15 | µA | SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; fSCL = 400 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Quiescent current, operating mode 400 kHz, VCCP = 2.7 V | ICC | 5 | 11 | µA | SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; fSCL = 400 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Quiescent current, operating mode 400 kHz, VCCP = 1.95 V | ICC | 4 | 8 | µA | SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; fSCL = 400 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Quiescent current, operating mode 400 kHz, VCCP = 1.32 V | ICC | 2 | 6 | µA | SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; fSCL = 400 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Standby current, VCCP = 3.6 V | ICC | 1.5 | 3 | µA | SCL, SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; IO = 0; fSCL = 0 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Standby current, VCCP = 2.7 V | ICC | 1.2 | 2 | µA | SCL, SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; IO = 0; fSCL = 0 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Standby current, VCCP = 1.95 V | ICC | 0.6 | 1.6 | µA | SCL, SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; IO = 0; fSCL = 0 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Standby current, VCCP = 1.32 V | ICC | 0.6 | 1.4 | µA | SCL, SDA, RESET = VCCI; P port, ADDR = VCCP or GND; I/O = inputs; IO = 0; fSCL = 0 kHz; -40°C < TA ≤ 85°C; IO resistors disabled | 8 | |
| Internal pull-up resistance, P port | Rpu(int) | 70 | 100 | 140 | kΩ | 8 | |
| Input pin capacitance, SCL | CI | 2.5 | 5 | pF | VI = VCC or GND; 1.08 V to 3.6 V | 8 | |
| Junction-to-ambient thermal resistance, PW (TSSOP) | RθJA | 115.7 | °C/W | 6 | |||
| Junction-to-case (top) thermal resistance, PW (TSSOP) | RθJC(top) | 46.1 | °C/W | 6 |
CAD (KiCad official)
- Symbol:
TCAL6408PWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
tcal6408pwr-etched.step/tcal6408pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tcal6408pwr.step/tcal6408pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (53 pp, sha256
44125e1eb0b8d950, retrieved 2026-10-20, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).