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TCA9536DGKR

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Texas Instruments I/O Expanders, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TCA9536DGKR

Texas Instruments · I/O Expanders · MSOP-8

TCA9536DGKR from Texas Instruments, in a MSOP-8. 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 P0 bidirectional P-port input-output with push-pull design structure and internal pull-up resistor enabled by default.
2 P1 bidirectional P-port input-output with push-pull design structure and internal pull-up resistor enabled by default.
3 P2 bidirectional P-port input-output with push-pull design structure and internal pull-up resistor enabled by default.
4 GND power_in Ground.
5 P3/INT bidirectional P-port input-output with push-pull design structure; when configured as INT it operates as open drain, and the internal pull-up resistor is enabled by default.
6 SCL bidirectional Serial clock bus; connect to VCC through a pull-up resistor.
7 SDA bidirectional Serial data bus; connect to VCC through a pull-up resistor.
8 VCC power_in Supply voltage, 1.65 V to 5.5 V recommended operating range.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package MSOP-8
Category Communication Interface Chip
Pins 8

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 VCC -0.5 6 V 4
Input voltage VI -0.5 6 V 4
Output voltage VO -0.5 6 V 4
Input clamp current IIK -20 mA VI < 0 4
Output clamp current IOK -20 mA VO < 0 4
Input-output clamp current IIOK -20 20 mA VO < 0 or VO > VCC 4
Continuous output low current IOL 50 mA VO = 0 to VCC 4
Continuous output high current IOH -50 mA VO = 0 to VCC 4
Continuous current through GND ICC -250 mA 4
Continuous current through VCC ICC 160 mA 4
Junction temperature TJ 150 °C 4
Storage temperature Tstg -65 150 °C 4
ESD HBM V(ESD) -4000 4000 V Pins P0-P3, VCC 4
ESD HBM V(ESD) -2000 2000 V Pins SDA, SCL 4
ESD CDM V(ESD) -1000 1000 V All pins 4
Supply voltage VCC 1.65 5.5 V 4
Input voltage SCL, SDA VI 0 5.5 V SCL, SDA 4
Input voltage P0-P3 VI 0 5.5 V P0-P3 4
High-level output current IOH -10 mA P3-P0 4
Low-level output current IOL 25 mA VCC > 1.8 V, P3-P0 4
Low-level output current IOL 15 mA VCC ≤ 1.8 V, P3-P0 4
Ambient temperature TA -40 125 °C 4
Junction temperature TJ 125 °C 4
Junction-to-ambient thermal resistance RθJA 183.7 °C/W DGK (VSSOP) 8-pin 5
Junction-to-case (top) thermal resistance RθJC(top) 76.9 °C/W DGK (VSSOP) 8-pin 5
Junction-to-board thermal resistance RθJB 104.9 °C/W DGK (VSSOP) 8-pin 5
Junction-to-top characterization parameter ΨJT 18.7 °C/W DGK (VSSOP) 8-pin 5
Junction-to-board characterization parameter ΨJB 103.4 °C/W DGK (VSSOP) 8-pin 5
Input diode clamp voltage VIK -1.2 V II = -18 mA, VCC 1.65 V to 5.5 V 5
Power-on reset voltage, VCC rising VPORR 1.2 1.6 V VI = VCC or GND, IO = 0 5
Power-on reset voltage, VCC falling VPORF 0.75 1 V VI = VCC or GND, IO = 0 5
P-port high-level output voltage VOH 1.2 V IOH = -8 mA, VCC 1.65 V 5
P-port high-level output voltage VOH 1.8 V IOH = -8 mA, VCC 2.3 V 5
P-port high-level output voltage VOH 2.6 V IOH = -8 mA, VCC 3 V 5
P-port high-level output voltage VOH 4.1 V IOH = -8 mA, VCC 4.5 V 5
P-port high-level output voltage VOH 1 V IOH = -10 mA, VCC 1.65 V 5
P-port high-level output voltage VOH 1.7 V IOH = -10 mA, VCC 2.3 V 5
P-port high-level output voltage VOH 2.5 V IOH = -10 mA, VCC 3 V 5
P-port high-level output voltage VOH 4 V IOH = -10 mA, VCC 4.5 V 5
High-level input voltage SDA, SCL VIH 0.7 V 0.7 × VCC, VCC 1.65 to 5.5 V (value is multiple of VCC) 5
High-level input voltage P ports VIH 0.7 V 0.7 × VCC, VCC 1.65 to 5.5 V (value is multiple of VCC) 5
Low-level input voltage SDA, SCL VIL 0.4 V 0.4 × VCC, VCC 1.65 to 5.5 V (value is multiple of VCC) 5
Low-level input voltage P ports VIL 0.3 V 0.3 × VCC, VCC 1.65 to 5.5 V (value is multiple of VCC) 5
Low-level output current SDA IOL 20 mA VOL = 0.4 V, VCC 1.65 V to 5.5 V 5
Low-level output current P0-P3 IOL 8 mA VOL = 0.5 V, VCC 1.65 V to 5.5 V 5
Low-level output current P0-P3 IOL 10 mA VOL = 0.7 V, VCC 1.65 V to 5.5 V 5
Low-level output current INT IOL 4 mA VOL = 0.4 V, VCC 1.65 V to 5.5 V 5
Input leakage current P ports II -1 0 1 µA VI = VCC, VCC 1.65 V to 5.5 V 5
Input leakage current P ports II -2 0 2 µA VI = 5.5 V, VCC 0 V 5
Input leakage current P ports II -100 -40 µA VI = GND, PU Enabled, VCC 1.65 V to 5.5 V 6
Input leakage current SCL, SDA II -1 0 1 µA VI = VCC or GND, VCC 1.65 V to 5.5 V 6
Quiescent current operating mode ICC 22 40 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, VCC 5.5 V 6
Quiescent current operating mode ICC 11 20 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, VCC 3.6 V 6
Quiescent current operating mode ICC 8 10 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, VCC 2.7 V 6
Quiescent current operating mode ICC 5 8 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, VCC 1.95 V 6
Quiescent current operating mode ICC 225 390 µA VI = GND, I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, PU Enabled, VCC 5.5 V 6
Quiescent current operating mode ICC 175 280 µA VI = GND, I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, PU Enabled, VCC 3.6 V 6
Quiescent current operating mode ICC 125 200 µA VI = GND, I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, PU Enabled, VCC 2.7 V 6
Quiescent current operating mode ICC 100 150 µA VI = GND, I/O = inputs, fSCL = 400 kHz, tr = tf = 300 ns, PU Enabled, VCC 1.95 V 6
Quiescent current operating mode ICC 100 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, VCC 5.5 V 6
Quiescent current operating mode ICC 40 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, VCC 3.6 V 6
Quiescent current operating mode ICC 25 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, VCC 2.7 V 6
Quiescent current operating mode ICC 15 µA VI = VCC or GND (PU Disabled), I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, VCC 1.95 V 6
Quiescent current operating mode ICC 225 425 µA VI = GND, I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, PU Enabled, VCC 5.5 V 6
Quiescent current operating mode ICC 175 250 µA VI = GND, I/O = inputs, fSCL = 1 MHz, tr = tf = 120 ns, PU Enabled, VCC 3.6 V 6
Quiescent current standby mode ICC 1.5 3.9 µA VI = VCC, IO = 0, I/O = inputs, fSCL = 0 kHz, VCC 5.5 V 6
Quiescent current standby mode ICC 0.9 2.2 µA VI = VCC, IO = 0, I/O = inputs, fSCL = 0 kHz, VCC 3.6 V 6
Quiescent current standby mode ICC 0.6 1.8 µA VI = VCC, IO = 0, I/O = inputs, fSCL = 0 kHz, VCC 2.7 V 6
Quiescent current standby mode ICC 0.6 1.5 µA VI = VCC, IO = 0, I/O = inputs, fSCL = 0 kHz, VCC 1.95 V 6
Quiescent current standby mode ICC 225 350 µA VI = GND, I/O = inputs, fSCL = 0 kHz, PU Enabled, VCC 5.5 V 6
Quiescent current standby mode ICC 175 250 µA VI = GND, I/O = inputs, fSCL = 0 kHz, PU Enabled, VCC 3.6 V 6
Quiescent current standby mode ICC 125 200 µA VI = GND, I/O = inputs, fSCL = 0 kHz, PU Enabled, VCC 2.7 V 6
Quiescent current standby mode ICC 100 150 µA VI = GND, I/O = inputs, fSCL = 0 kHz, PU Enabled, VCC 1.95 V 6

CAD (KiCad official)

  • Symbol: TCA9536DGKR
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: tca9536dgkr-etched.step / tca9536dgkr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tca9536dgkr.step / tca9536dgkr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (38 pp, sha256 96e8633ff5d8b9a4, retrieved 2026-10-23, tier: manufacturer)
  • 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