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Product Description

The PI4IOE5V9554 are 16-pin CMOS devices that provide 8 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and were developed to enhance the Diodes family of I2C-bus I/O expanders. The improvements include higher drive capability, 5 V I/O tolerance, lower supply current, individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, and so on.

The PI4IOE5V9554 consist of an 8-bit Configuration register (Input or Output selection); 8-bit Input Port register, 8-bit Output Port register and an 8-bit Polarity Inversion register (active HIGH or active LOW operation). The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input Port or Output Port register. The polarity of the read register can be inverted with the Polarity Inversion register. All registers can be read by the system master. Although pin-to-pin and I2C-bus address compatible with the PCF8574 series, software changes are required due to the enhancements and are discussed in Application Note AN469.

The PI4IOE5V9554 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine.

Three hardware pins (A0, A1, A2) vary the fixed I2C-bus address and allow up to eight devices to share the same I2C-bus/ SMBus. The PI4IOE5V9554 is identical to the PI4IOE5V9554 except that the fixed I2C-bus address is different allowing up to sixteen of these devices (eight of each) on the same I2C-bus/SMBus.

Features

  • Operating power supply voltage range of 2.3V to 5.5V
  • 5V tolerant I/Os
  • Polarity Inversion register
  • Active LOW interrupt output
  • Low standby current
  • Noise filter on SCL/SDA inputs
  • No glitch on power-up
  • Internal power-on reset
  • 8 I/O pins which default to 8 inputs
  • 0 Hz to 400 kHz clock frequency
  • ESD protection exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Packages offered: TSSOP (L16), HVQFN16 (3 x 3 x 0.85 mm)

Product Specifications

Product Parameters

Analog or Digital? Digital
Voltage 2.2V/5V
Single Ended Channels 8
Signal Type Single Ended
Configuration 8 bits
Temperature -40 to 85

Related Content

Packages
TQFN (ZH16) MSL1 Sn
TSSOP (L16) MSL1 Sn

Applications

Technical Documents

Design tool model software

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Request Samples
Qty. Carrier
PI4IOE5V9554LE Active TSSOP-16 GREEN 60 TUBE Request Sample
PI4IOE5V9554LEX Active TSSOP-16 GREEN 2500 T&R Request Sample
PI4IOE5V9554ZHEX Active W-QFN3030-16 GREEN 3500 T&R Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

PCNs

Product Change Notices

PCN # Issue Date Subject
16-08 2016-05-20 Update some of our package outline drawing dimensions to align with JEDEC standards (with some exceptions) on few packages to accommodate the POD’s of our existing assembly suppliers and own assembly factories
16-22 2016-10-07 Change the tape and reel quantity multiple for the following package types from 3,000 to 2,500: TSSOP-8, -14, -16 (L), QSOP-16, -20 (Q), MQSOP-8 (UE), SOICP-8, -14, -16 (W) pins
Change the tape and reel quantity multiple for the following package types from 4,000 to 2,500: MQSOP-8, -10 (U) pins
16-26 2016-10-31 Adding JCET (Jiangsu Changjiang Electronics Technology Co., Ltd) in Suqian, China as an additional supplier for devices in TSSOP, MSOP, SOIC, QSOP packages.
16-12 2016-06-02 Adding two internal assembly and test sites: Diodes Technology (Chengdu) Company Limited (CAT) located in Chengdu, China and Diodes SKE/DSH (Shanghai Kaihong Electronic Co./Diodes Inc. Shanghai) (SAT) located in Shanghai, China.