PCAL6416AHF,128 NXP Semiconductors, PCAL6416AHF,128 Datasheet - Page 25

• Manufacturer Part Number: PCAL6416AHF,128
• Description: Interface - I/O Expanders 16-bit I2C-busSMBus Low Voltage
• Manufacturer: NXP Semiconductors

Specifications of PCAL6416AHF,128

• Rohs: yes
• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: HWQFN-24
• Operating Current: 200 mA
• Output Current: 25 mA
• Product Type: I/O Expanders

NXP Semiconductors
PCAL6416A
Product data sheet
Fig 20. Simplified output stage
9.2 Output drive strength control
The Output drive strength registers allow the user to control the output drive level of the
GPIO. Each GPIO can be configured independently to one of the four possible output
current levels. By programming these bits the user is changing the number of transistor
pairs or ‘fingers’ that drive the I/O pad.
Figure 20
Configuration register, the output port data, and the current control register. When the
Current Control register bits are programmed to 10b, then only two of the fingers are
active, reducing the current drive capability by 50 %.
Fig 18. High value resistor in parallel with
the LED
shows a simplified output stage. The behavior of the pad is affected by the
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 24 December 2012
Low-voltage translating 16-bit I
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Fig 19. Device supplied by a lower voltage
2
C-bus/SMBus I/O expander
PCAL6416A
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© NXP B.V. 2012. All rights reserved.
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