16-pin (DB) package image

PCA9554DB OBSOLETE

8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers

DATA SHEET

PCA9554DB is no longer in production
open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device.
TCA9554DBR ACTIVE 8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers Replacement
Same functionality with different pin-out to the compared device.
TCA9554PWR ACTIVE 8-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers

Pricing

Qty Price (USD)
1 — 99 $2.177
100 — 249 $1.798
250 — 999 $1.292
1,000 + 99,999,999 $0.972

Export classification

*For reference only

  • US ECCN: EAR99

More PCA9554 information

Packaging information

Package | Pins SSOP (DB) | 16
Operating temperature range (°C) -40 to 85
Package qty | Carrier 80 | TUBE

Features for the PCA9554

  • I2C to Parallel Port Expander
  • Open-Drain Active-Low Interrupt Output
  • Operating Power-Supply Voltage Range of 2.3 V to 5.5 V
  • 5-V Tolerant I/Os
  • 400-kHz Fast I2C Bus
  • Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus
  • Input/Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-On Reset
  • Power-Up With All Channels Configured as Inputs
  • No Glitch On Power Up
  • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

Description for the PCA9554

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the PCA9554 can remain a simple slave device.

The device’s outputs (latched) have high-current drive capability for directly driving LEDs and low current consumption.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight devices to share the same I2C bus or SMBus.

The PCA9554 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are required, due to the enhancements in the PCA9554 over the PCF8574.

The PCA9554 and PCA9554A are identical except for their fixed I2C address. This allows for up to 16 of these devices (eight of each) on the same I2C/SMBus.

Pricing

Qty Price (USD)
1 — 99 $2.177
100 — 249 $1.798
250 — 999 $1.292
1,000 + 99,999,999 $0.972

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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