component
DS4520E+
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Analog Devices Inc Maxim Integrated 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
markdownDS4520E+
Analog Devices Inc Maxim Integrated · I/O Expanders · TSSOP-16
DS4520E+ from Analog Devices Inc Maxim Integrated, 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 | I/O_0 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 2 | I/O_1 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 3 | I/O_2 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 4 | I/O_3 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 5 | I/O_4 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 6 | A0 | input | I2C address input; A0, A1, and A2 determine the I2C slave address, with GND giving 0 and VCC giving 1 in each bit position. |
| 7 | A1 | input | I2C address input; A0, A1, and A2 determine the I2C slave address, with GND giving 0 and VCC giving 1 in each bit position. |
| 8 | VCC | power_in | Power supply voltage, specified from +2.7V to +5.5V. |
| 9 | SDA | bidirectional | I2C serial data open-drain input/output. |
| 10 | SCL | input | I2C serial clock input, specified for clock frequencies from 0 to 400kHz. |
| 11 | A2 | input | I2C address input; A0, A1, and A2 determine the I2C slave address, with GND giving 0 and VCC giving 1 in each bit position. |
| 12 | I/O_5 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 13 | I/O_6 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 14 | I/O_7 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 15 | I/O_8 | bidirectional | Bidirectional I/O pin with an open-drain output that can sink up to 12mA and a selectable internal pullup. |
| 16 | GND | power_in | Ground reference for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| 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 | VCC | 2.7 | 5.5 | V | (Note 1) | 2 | |
| Voltage on VCC, SDA, and SCL Pins Relative to Ground | -0.5 | 6 | V | 2 | |||
| Voltage on A0, A1, A2, and I/O_n Relative to Ground | -0.5 | 6 | V | (VCC + 0.5V) not to exceed +6.0V | 2 | ||
| Operating Temperature Range | -40 | 85 | °C | 2 | |||
| EEPROM Programming Temperature Range | 0 | 70 | °C | 2 | |||
| Storage Temperature Range | -55 | 125 | °C | 2 | |||
| Input Logic 0 | VIL | -0.3 | V | 2 | |||
| Input Leakage | IL | -1 | 1 | µA | 2 | ||
| Input Current each I/O Pin | II/O | -1 | 1 | µA | 0.4V < VI/O < 0.9VCC (Note 3) | 2 | |
| Low-Level Output Voltage (SDA) | VOL | 0 | 0.4 | V | 3mA sink current | 2 | |
| Low-Level Output Voltage (SDA) | VOL | 0 | 0.6 | V | 6mA sink current | 2 | |
| Standby Current | ISTBY | 2 | 10 | µA | (Note 2) | 2 | |
| I/O Pin Pullup Resistors | RPU | 4 | 5.5 | 7.5 | kΩ | 2 | |
| I/O Capacitance | CI/O | 10 | pF | (Note 4) | 2 | ||
| SCL Clock Frequency | fSCL | 0 | 400 | kHz | (Note 5) | 3 | |
| Bus Free Time Between Stop and Start Conditions | tBUF | 1.3 | µs | 3 | |||
| Hold Time (Repeated) Start Condition | tHD:STA | 0.6 | µs | 3 | |||
| Low Period of SCL | tLOW | 1.3 | µs | 3 | |||
| High Period of SCL | tHIGH | 0.6 | µs | 3 | |||
| Data Hold Time | tHD:DAT | 0 | 0.9 | µs | 3 | ||
| Data Setup Time | tSU:DAT | 100 | ns | 3 | |||
| Start Setup Time | tSU:STA | 0.6 | µs | 3 | |||
| SDA and SCL Rise Time | tR | 300 | ns | (Note 6) | 3 | ||
| SDA and SCL Fall Time | tF | 300 | ns | (Note 6) | 3 | ||
| Stop Setup Time | tSU:STO | 0.6 | µs | 3 | |||
| SDA and SCL Capacitive Loading | CB | 400 | pF | (Note 6) | 3 | ||
| EEPROM Write Time | tWR | 10 | 20 | ms | (Note 7) | 3 | |
| EEPROM Writes | 50000 | +70°C (Note 4) | 3 |
CAD (KiCad official)
- Symbol:
DS4520E+ - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
ds4520e-etched.step/ds4520e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds4520e.step/ds4520e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (11 pp, sha256
7a03872d5183fb98, retrieved 2026-10-19, tier: lcsc) - 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).