PCA9555A 查看數據表（PDF） - NXP Semiconductors.

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PCA9555A

Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up

NXP Semiconductors. 

NXP Semiconductors

PCA9555A

Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up

2. Features and benefits

 I2C-bus to parallel port expander

 Operating power supply voltage range of 1.65 V to 5.5 V

 Low standby current consumption:

 1.5 A (typical at 5 V VDD)

 1.0 A (typical at 3.3 V VDD)

 Schmitt-trigger action allows slow input transition and better switching noise immunity

at the SCL and SDA inputs

 Vhys = 0.10  VDD (typical)

 5 V tolerant I/Os

 Open-drain active LOW interrupt output (INT)

 400 kHz Fast-mode I2C-bus

 Internal power-on reset

 Power-up with all channels configured as inputs with weak pull-up resistors

 No glitch on power-up

 Latched outputs with 25 mA drive maximum capability for directly driving LEDs

 Latch-up performance exceeds 100 mA per JESD78, Class II

 ESD protection exceeds JESD22

 2000 V Human Body Model (A114-A)

 1000 V Charged-Device Model (C101)

 Packages offered: TSSOP24, HWQFN24

3. Ordering information

Table 1. Ordering information

Type number

Package

Name

Description

PCA9555APW

TSSOP24 plastic thin shrink small outline package; 24 leads; body width 4.4 mm

PCA9555AHF

HWQFN24 plastic thermal enhanced very very thin quad flat package; no leads;

24 terminals; body 4  4  0.75 mm

3.1 Ordering options

Table 2. Ordering options

Type number

Topside mark

PCA9555APW PCA9555A

PCA9555AHF 555A

Temperature range

40 C to +85 C

40 C to +85 C

Version

SOT355-1

SOT994-1

PCA9555A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 11 September 2012

© NXP B.V. 2012. All rights reserved.

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