Texas Instruments PCA9557RGVRG4

Manufacturer No:

PCA9557RGVRG4

Manufacturer:

Texas Instruments

Package:

Description:

8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with reset & config registers

Quantity:

In Stock :9236

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Date Code：Within 2 Years

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PCA9557RGVRG4 Information

Texas Instruments PCA9557RGVRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments PCA9557RGVRG4.

Type
Parameter

Number of I/Os
8

Features
Configuration registers, Interrupt pin

Supply voltage (min) (V)
2.3

Supply voltage (max) (V)
5.5

Addresses
8

Rating
Catalog

Frequency (max) (MHz)
0.4

Operating temperature range (°C)
-40 to 85

Package
SOIC (D)

Pins
16

Type
Parameter

Size
59.4 mm² 9.9 x 6

Package
SSOP (DB)

Pins
16

Size
48.36 mm² 6.2 x 7.8

Package
TSSOP (PW)

Pins
16

Size
32 mm² 5 x 6.4

Package
TVSOP (DGV)

Pins
16

Size
23.04 mm² 3.6 x 6.4

Download datasheets and manufacturer documentation for Texas Instruments PCA9557RGVRG4.

This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3V to 5.5V VCC operation. The device provides general-purpose remote I/O expansion for most microcontroller families through the I2C interface [serial clock (SCL) and serial data (SDA)].

The PCA9557 consists of one 8-bit configuration (input or output selection), input port, output port, and polarity inversion (active-high) registers. At power on, the I/Os are configured as inputs. However, the system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register. All registers can be read by the system controller.

The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low current consumption.

The system controller can reset the PCA9557 in the event of a timeout or other improper operation by asserting a low in the active-low reset (RESET) input. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine. Asserting RESET causes the same reset/initialization to occur without depowering the part.

Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address, allowing up to eight devices to share the same I2C bus or SMBus.

Low standby current consumption of 1µA maximum
I2C to parallel port expander
Operating power-supply voltage range of 2.3V to 5.5V
5V Tolerant I/O ports
400kHz Fast I2C bus
Three hardware address pins allow for use of up to eight devices on I2C/SMBus
Lower-voltage higher-performance migration path for PCA9556
Input and output configuration register
Polarity inversion register
Active-low reset input
Internal power-on reset
High-impedance open drain on P0
Power up with all channels configured as inputs
No glitch on power up
Noise filter on SCL or SDA inputs
Latched outputs with high current drive maximum capability for directly driving LEDs
Latch-up performance exceeds 100mA per JESD 78, class II
ESD protection exceeds JESD 22
- 2000V Human-body model (A114-A)
- 200V Machine model (A115-A)
- 1000V Charged-device model (C101)