PCF8575CDBE4 Part Information
Details for PCF8575CDBE4 by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs
Part Description
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 4.5-V to 5.5-V VCC operation. The PCF8575C provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface serial clock (SCL) and serial data (SDA). The device features a 16-bit quasi-bidirectional input/output (I/O) port (P07–P00, P17–P10), including latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. At power on, the I/Os are in 3-state mode. The strong pullup to VCC allows fast-rising edges into heavily loaded outputs. This device turns on when an output is written high and is switched off by the negative edge of SCL. The I/Os should be high before being used as inputs. After power on, as all the I/Os are set to 3-state, all of them can be used as inputs. Any change in setting of the I/Os as either inputs or outputs can be done with the write mode. If a high is applied externally to an I/O that has been written earlier to low, a large current (IOL) flows to GND.
Part Downloads
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Part Features
- 400-kHz Fast I2 C Bus
- Address by Three Hardware Address Pins for Use of up to Eight Devices
- Compatible With Most Microcontrollers
- ESD Protection Exceeds JESD 22
- I2 C to Parallel-Port Expander
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
- Low Standby-Current Consumption of 10 u03bcA Maximum
- Open-Drain Interrupt Output
Part Specifications
| Chip Configuration | 16bit |
| Bus Frequency | 400kHz |
| IC Interface Type | I2C Parallel SMBus |
| Supply Voltage Min | 4.5V |
| Supply Voltage Max | 5.5V |
| Interface Case Style | SSOP |
| No. of Pins | 24Pins |
| No. of I/O's | 16I/O's |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | - |
| SVHC | No SVHC (27-Jun-2018) |
| Base Number | 8575 |
| Communication Function | I/O Expander |
| Control Interface | I2C Parallel |
| IC Generic Number | 8575 |
| Logic Function Number | 8575 |
| No. of Bits | 16bit |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Operating Temperature Range | -40°C to +85°C |
| Supply Current | 10µA |
| Supply Voltage Range | 4.5V to 5.5V |
| Termination Type | Surface Mount Device |