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Datasheet

PCA9672
(Product Specification)
06-Jul-07, 27 pages, 164 kB

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General description

The PCA9672 provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus) and is a part of the Fast-mode Plus family.

The PCA9672 is a drop-in upgrade for the PCF8574 providing higher Fast-mode Plus (Fm+) I2C-bus speeds (1 MHz versus 400 kHz) so that the output can support PWM dimming of LEDs, higher I2C-bus drive (30 mA versus 3 mA) so that many more devices can be on the bus without the need for bus buffers, higher total package sink capacity (200 mA versus 100 mA) that supports having all LEDs on at the same time and more device addresses (16 versus 8) are available to allow many more devices on the bus without address conflicts.

The difference between the PCA9672 and the PCF8574 is that the A2 address pin is replaced by the RESET input on the PCA9672.

The device consists of an 8-bit quasi-bidirectional port and an I2C-bus interface. The PCA9672 has low current consumption and include latched outputs with 25 mA high current drive capability for directly driving LEDs.

The PCA9672 possesses an interrupt line (INT) that can be connected to the interrupt logic of the microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C-bus.

The internal Power-On Reset (POR), hardware reset pin (RESET), or Software Reset sequence initializes the I/Os as inputs.

Features

  • 1 MHz I2C-bus interface
  • Compliant with the I2C-bus Fast and Standard modes
  • SDA with 30 mA sink capability for 4000 pF buses
  • 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
  • 8-bit remote I/O pins that default to inputs at power-up
  • Latched outputs with 25 mA sink capability for directly driving LEDs
  • Total package sink capability of 200 mA
  • Active LOW open-drain interrupt output
  • 16 programmable slave addresses using 2 address pins
  • Readable device ID (manufacturer, device type, and revision) Low standby current
  • -40 Cel to +85 Cel operation
  • 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 JEDEC standard JESD78 which exceeds 100 mA
  • Packages offered: SO16, TSSOP16, HVQFN16

Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
PCA9672BSPCA9672BS-T9352 827 45118Volume productionSOT758-1
(HVQFN16)
Reel Pack, SMD, 13"Standard MarkingPCA9672BS
PCA9672DPCA9672D9352 827 46512Volume productionSOT162-1
(SO16)
Tube Dry PackStandard MarkingPCA9672D
Always Pb-free
PCA9672DPCA9672D-T9352 827 46518Volume productionSOT162-1
(SO16)
Reel Dry Pack, SMD, 13"Standard MarkingPCA9672D
Always Pb-free
PCA9672PWPCA9672PW9352 827 47112Volume productionSOT403-1
(TSSOP16)
TubeStandard MarkingPCA9672PW
Always Pb-free
PCA9672PWPCA9672PW-T9352 827 47118Volume productionSOT403-1
(TSSOP16)
Reel Pack, SMD, 13"Standard MarkingPCA9672PW
Always Pb-free

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
PCA9672BS9352 827  45118        Order samples
PCA9672D9352 827  46512       not available
PCA9672D9352 827  46518  NADIGI-KEY CORPORATION1,0008/5/2008 Buy online Order samples
   NADIGI-KEY CORPORATION8888/5/2008 Buy online  
PCA9672PW9352 827  47112  NADIGI-KEY CORPORATION1,5048/5/2008 Buy online not available
PCA9672PW9352 827  47118        Order samples

Block diagrams/pinning

Parametrics/similar products

Type numberPackageOperating
temp.(Cel)
I²C-bus
interface
# of BitsInterrupt outputSource Current per bit(mA)I²C-bus(kHz)Operating voltage(VDC)Weak Pull-Up Current Source Max Sink Current per bit(mA)# of AddressesMax Sink Current
per package(mA)
Reset input pin
PCA9672BSSOT758-1
(HVQFN16)
-40~85 Fast Mode Plus 30 mA SDA outputs for 4000 pF bus 8 yes 0.1 1000 2.3~5.5 yes 25 16 200 yes
PCA9672DSOT162-1
(SO16)
-40~85 Fast Mode Plus 30 mA SDA outputs for 4000 pF bus 8 yes 0.1 1000 2.3~5.5 yes 25 16 200 yes
PCA9672PWSOT403-1
(TSSOP16)
-40~85 Fast Mode Plus 30 mA SDA outputs for 4000 pF bus 8 yes 0.1 1000 2.3~5.5 yes 25 16 200 yes

Similar products

PCA9672 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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