9557 查看數據表（PDF） - NXP Semiconductors.
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9557 Datasheet PDF : 26 Pages
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NXP Semiconductors
PCA9557
8-bit I2C-bus and SMBus I/O port with reset
3. Ordering information
Table 1. Ordering information
Type number Package
Name
Description
PCA9557D
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
PCA9557PW TSSOP16 plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
PCA9557BS
HVQFN16 plastic thermal enhanced very thin quad flat package;
no leads; 16 terminals; body 4 × 4 × 0.85 mm
Version
SOT109-1
SOT403-1
SOT629-1
3.1 Ordering options
Table 2. Ordering options
Type number Topside mark
PCA9557D
PCA9557D
PCA9557PW PCA9557
PCA9557BS 9557
Temperature range
Tamb = −40 °C to +85 °C
Tamb = −40 °C to +85 °C
Tamb = −40 °C to +85 °C
4. Block diagram
PCA9557
A0
A1
A2
SCL
SDA
INPUT
FILTER
VDD
VSS
RESET
POWER-ON
RESET
Fig 1. Block diagram of PCA9557
IO0
IO1
8-bit
IO2
I2C-BUS/SMBus
CONTROL
write pulse
INPUT/
OUTPUT
PORTS
IO3
IO4
IO5
IO6
read pulse
IO7
002aad275
PCA9557
Product data sheet
Rev. 06 — 11 June 2008
© NXP B.V. 2008. All rights reserved.
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