PCA9500 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
PCA9500 Datasheet PDF : 26 Pages
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NXP Semiconductors
PCA9500
8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM
20
IOH
(µA)
−40
VDD = 2.5 V
2.7 V
3.0 V
3.3 V
3.6 V
−100
002aad307
20
IOH
(µA)
−20
VDD = 2.5 V
2.7 V
3.0 V
3.3 V
3.6 V
−60
−100
002aad308
−160
0
1.2
a. Tamb = −40 °C
2.4
3.6
VOH (V)
20
IOH
(µA)
−20
VDD = 2.5 V
2.7 V
3.0 V
3.3 V
3.6 V
−60
−140
0
1.2
b. Tamb = 25 °C
002aad309
2.4
3.6
VOH (V)
−100
c. Tamb = 85 °C
Fig 21. VOH versus IOH
−140
0
1.2
2.4
3.6
VOH (V)
Remark: Rapid fall-off in VOH at current inception is due to a diode that provides 5 V
overvoltage protection for the GPIO I/O pins. When the GPIO I/O are being used as
inputs, the internal current source VOH should be evaluated to determine if external pull-up
resistors are required to provide sufficient VIH threshold noise margin.
PCA9500_4
Product data sheet
Rev. 04 — 15 April 2009
© NXP B.V. 2009. All rights reserved.
15 of 26
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