PCA9557 - Brand New PHILIPS I/O Expanders
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Description
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C applications. It consists of an 8-bit input port register, 8-bit output port register, and an I2C/SMBus interface. The PCA9557 has low current consumption and features a high impedance open drain output pin, I/O0. The system master can enable the PCA9557’s I/O as either input or output by writing to the configuration register.
Specifications and features
• Lower voltage, higher performance migration path for the PCA9556
• 8 general purpose input/output expander/collector
• Input/output configuration register
• Active HIGH polarity inversion register
• I2C and SMBus interface logic
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active LOW reset input
• 3 address pins allowing up to 8 devices on the I2C/SMBus
• High impedance open drain on I/O0
• No glitch on power-up
• Power-up with all channels configured as inputs
• Low standby current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 5 V tolerant inputs/outputs
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100 mA
• Package offer: SO 16, TSSOP 16Application Scenarios
The PCA9557 can be used in various applications that require parallel input/output expansion. Its compatibility with SMBus and I2C applications makes it a versatile choice for different electronic systems.
Comparison
Advantages:
- Lower voltage, higher performance migration path for the PCA9556
- High impedance open drain on I/O0
- Low standby current
- Wide operating power supply voltage range
- ESD protection exceeds industry standards
- Latch-up testing exceeds industry standards
Disadvantages:
- Requires configuration by system master for I/O enablement
- Limited package options
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Datenblatt
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Shopping guide
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Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
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How to Buy:
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Beliebte Teile der gleichen Art
- Datasheet: Download PCA9557
- Chipdaten Teil: CD87-PCA9557
- Lagerhaus: China, Hongkong
- Versenden: Innerhalb von 24 Stunden
- Kostenloser Versand: Yes
- Bevorzugter Versand: Yes, 3-5 days
- Letzte Aktualisierung: 2024/06/03 08:59 +0800
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