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PI4IOE5V9538LEX
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Diodes Incorporated I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownPI4IOE5V9538LEX
Diodes Incorporated · I/O Expanders · TSSOP-16
PI4IOE5V9538LEX from Diodes Incorporated, 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 | A0 | input | Address input 0 that, together with A1, sets the fixed I2C-bus address so up to four devices can share the bus. |
| 2 | A1 | input | Address input 1 that, together with A0, sets the fixed I2C-bus address so up to four devices can share the bus. |
| 3 | RESET | input | Active-low reset input; holding it LOW for at least tw(rst) (25 ns) resets registers and the state machine to defaults, and it needs a pull-up if not actively driven. |
| 4 | IO0 | bidirectional | Input/output 0, 5V tolerant, configured as input by default at reset. |
| 5 | IO1 | bidirectional | Input/output 1, 5V tolerant, configured as input by default at reset. |
| 6 | IO2 | bidirectional | Input/output 2, 5V tolerant, configured as input by default at reset. |
| 7 | IO3 | bidirectional | Input/output 3, 5V tolerant, configured as input by default at reset. |
| 8 | GND | power_in | Supply ground. |
| 9 | IO4 | bidirectional | Input/output 4, 5V tolerant, configured as input by default at reset. |
| 10 | IO5 | bidirectional | Input/output 5, 5V tolerant, configured as input by default at reset. |
| 11 | IO6 | bidirectional | Input/output 6, 5V tolerant, configured as input by default at reset. |
| 12 | IO7 | bidirectional | Input/output 7, 5V tolerant, configured as input by default at reset. |
| 13 | INT | output | Active-low open-drain interrupt output that signals a change of state on an input pin, with IOL of 3 mA min at VOL=0.4V. |
| 14 | SCL | input | Serial clock line of the I2C-bus/SMBus, operating from 0 to 400 kHz with VIH 0.7VCC min. |
| 15 | SDA | bidirectional | Serial data line of the I2C-bus/SMBus, with IOL of 3 mA min at VOL=0.4V. |
| 16 | VCC | power_in | Power supply, 2.3V to 5.5V operating range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TSSOP-16 |
| Category | Communication Interface Chip/UART/485/232 |
| 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 | VCC | 2.3 | 5.5 | V | 3 | ||
| Supply current, operating | ICC | 40 | 60 | μA | Operating mode; VCC = 5.5 V; no load; fSCL= 400 kHz | 3 | |
| Supply current, operating | ICC | 10 | 20 | μA | Operating mode; VCC = 2.3 V; no load; fSCL= 400 kHz | 3 | |
| Standby current | Istb | 0.25 | 1 | μA | Standby mode; VCC = 5.5 V; no load; VI = GND; fSCL= 0 kHz; I/O = inputs | 3 | |
| Power-on reset voltage | VPOR | 1.16 | 1.41 | V | 3 | ||
| SCL/SDA low level input voltage | VIL | -0.5 | 0.3 | V | max printed as +0.3VCC | 3 | |
| SCL/SDA high level input voltage | VIH | 0.7 | 5.5 | V | min printed as 0.7VCC | 3 | |
| SDA low level output current | IOL | 3 | 7 | mA | VOL=0.4V | 3 | |
| SCL/SDA leakage current | IL | -1 | 1 | μA | VI=VCC=GND | 3 | |
| SCL/SDA input capacitance | Ci | 5 | 10 | pF | VI =GND | 3 | |
| I/O low level input voltage | VIL | -0.5 | 0.81 | V | 3 | ||
| I/O high level input voltage | VIH | 1.8 | 5.5 | V | 3 | ||
| I/O low level output current | IOL | 8 | 10 | mA | VCC = 2.3 V; VOL = 0.5 V | 3 | |
| I/O low level output current | IOL | 10 | 13 | mA | VCC = 2.3 V; VOL = 0.7 V | 3 | |
| I/O low level output current | IOL | 8 | 14 | mA | VCC = 3.0 V; VOL = 0.5 V | 3 | |
| I/O low level output current | IOL | 10 | 19 | mA | VCC = 3.0 V; VOL = 0.7 V | 3 | |
| I/O low level output current | IOL | 8 | 17 | mA | VCC = 4.5 V; VOL = 0.5 V | 3 | |
| I/O low level output current | IOL | 10 | 24 | mA | VCC=4.5 V; VOL = 0.7 V | 3 | |
| High level output voltage | VOH | 1.8 | V | IOH=-8mA;VCC=2.3V | 3 | ||
| High level output voltage | VOH | 1.7 | V | IOH=-10mA;VCC=2.3V | 3 | ||
| High level output voltage | VOH | 2.6 | V | IOH=-8mA;VCC=3.0V | 3 | ||
| High level output voltage | VOH | 2.5 | V | IOH=-10mA;VCC=3.0V | 3 | ||
| High level output voltage | VOH | 4.1 | V | IOH=-8mA;VCC=4.75V | 3 | ||
| High level output voltage | VOH | 4 | V | IOH=-10mA;VCC=4.75V | 4 | ||
| Input leakage current | ILI | -1 | 1 | μA | VCC=3.6V; VI=VCC=GND | 4 | |
| I/O input capacitance | Ci | 5 | 10 | pF | 4 | ||
| INT low level output current | IOL | 3 | 13 | mA | VOL=0.4V | 4 | |
| INT output current (labelled High level input voltage) | IOH | -1 | 1 | μA | VOL=0.4V | 4 | |
| A0/A1/RESET low level input voltage | VIL | -0.5 | 0.81 | V | 4 | ||
| A0/A1/RESET high level input voltage | VIH | 1.8 | 5.5 | V | 4 | ||
| A0/A1/RESET input leakage current | IL | -1 | 1 | μA | VI=VCC=GND | 4 | |
| SCL clock frequency (fast mode) | fSCL | 0 | 400 | kHz | Fast mode I2C | 5 | |
| Bus free time STOP to START (fast mode) | tBUF | 1.3 | μs | Fast mode I2C | 5 | ||
| Hold time repeated START (fast mode) | tHD;STA | 0.6 | μs | Fast mode I2C | 5 | ||
| Set-up time repeated START (fast mode) | tSU;STA | 0.6 | μs | Fast mode I2C | 5 | ||
| Set-up time STOP (fast mode) | tSU;STO | 0.6 | μs | Fast mode I2C | 5 | ||
| Data valid acknowledge time (fast mode) | tVD;ACK | 0.9 | μs | Fast mode I2C | 5 | ||
| Data hold time (fast mode) | tHD;DAT | 0 | ns | Fast mode I2C | 5 | ||
| Data valid time (fast mode) | tVD;DAT | 0.9 | μs | Fast mode I2C | 5 | ||
| Data set-up time (fast mode) | tSU;DAT | 100 | ns | Fast mode I2C | 5 | ||
| LOW period of SCL (fast mode) | tLOW | 1.3 | μs | Fast mode I2C | 5 | ||
| HIGH period of SCL (fast mode) | tHIGH | 0.6 | μs | Fast mode I2C | 5 | ||
| Fall time SDA and SCL (fast mode) | tf | 300 | ns | Fast mode I2C | 5 | ||
| Rise time SDA and SCL (fast mode) | tr | 300 | ns | Fast mode I2C | 5 | ||
| Spike pulse width suppressed by input filter (fast mode) | tSP | 50 | ns | Fast mode I2C | 5 | ||
| Data output valid time | tv(Q) | 200 | ns | Fast mode I2C | 5 | ||
| Data input set-up time | tsu(D) | 100 | ns | Fast mode I2C | 5 | ||
| Data input hold time | th(D) | 1 | μs | Fast mode I2C | 5 | ||
| Valid time on pin INT | tv(INT) | 4 | μs | Fast mode I2C | 5 | ||
| Reset time on pin INT | trst(INT) | 4 | μs | Fast mode I2C | 5 | ||
| Reset pulse width | tw(rst) | 25 | ns | Fast mode I2C | 5 | ||
| Reset recovery time | tvrec(rst) | 0 | ns | Fast mode I2C | 5 | ||
| Reset time | Trst | 1 | us | Fast mode I2C | 5 | ||
| Power supply voltage | -0.5 | 6 | V | 3 | |||
| Voltage on an I/O pin | -0.5 | 6 | V | GND-0.5V to +6.0V | 3 | ||
| Input current | -20 | 20 | mA | 3 | |||
| Output current on an I/O pin | -50 | 50 | mA | 3 | |||
| Supply current | 85 | mA | 3 | ||||
| Ground supply current | 100 | mA | 3 | ||||
| Total power dissipation | 200 | mW | 3 | ||||
| Operation temperature | -40 | 85 | ℃ | 3 | |||
| Storage temperature | -65 | 150 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
PI4IOE5V9538LEX - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
pi4ioe5v9538lex-etched.step/pi4ioe5v9538lex-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pi4ioe5v9538lex.step/pi4ioe5v9538lex.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (15 pp, sha256
24c73e5783bade41, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).