PCA9548APW,118 Circuitos integrados de interruptor multiplexor 8-CH I2C SWITCH W/RESET

Short Description:

Manufacturers: NXP USA Inc.
Product Category: Interface – Specialized
Data Sheet: PCA9548APW,118 
Description: IC INTERFACE SPECIALIZED 24TSSOP
RoHS status: RoHS Compliant


Product Detail

Features and benefits

Product Tags

♠ Product Description

Atributo del producto Valor de atributo
Fabricante: NXP
Categoría de producto: Circuitos integrados de interruptor multiplexor
RoHS:  Detalles
Serie: PCA9548A
Producto: Multiplexers
Estilo de montaje: SMD/SMT
Paquete / Cubierta: TSSOP-24
Número de canales: 8 Channel
Configuración: 2 x 8:1
Voltaje de alimentación - Mín.: 2.3 V
Voltaje de alimentación - Máx.: 5.5 V
Mínimo voltaje de alimentación doble: -
Máximo voltaje de alimentación doble: -
Resistencia en modo encendido - Máx.: 24 Ohms
Tiempo encendido - Máx.: 300 ns
Tiempo apagado - Máx.: 300 ns
Temperatura de trabajo mínima: - 40 C
Temperatura de trabajo máxima: + 85 C
Empaquetado: Reel
Empaquetado: Cut Tape
Empaquetado: MouseReel
Ancho de banda: 0.4 MHz
Marca: NXP Semiconductors
Altura: 0.95 mm
Longitud: 7.9 mm
Voltaje de alimentación operativo: 2.3 V to 5.5 V
Dp - Disipación de potencia : 400 mW
Tipo de producto: Multiplexer Switch ICs
Tiempo de retardo de propagación: 0.3 ns
Cantidad de empaque de fábrica: 2500
Subcategoría: Switch ICs
Ancho: 4.5 mm
Alias de las piezas n.º: 935275816118
Peso de la unidad: 0.006399 oz

PCA9548A 8-channel I2C-bus switch with reset

The PCA9548A is an octal bidirectional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register. An active LOW reset input allows the PCA9548A to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state.

Pulling the RESET pin LOW resets the I2C-bus state machine and causes all the channels to be deselected as does the internal Power-on reset function. The pass gates of the switches are constructed such that the VDD pin can be used to limit the maximum high voltage which will be passed by the PCA9548A. This allows the use of different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate with 5 V parts without any additional protection.

External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 6 V tolerant.


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  •  1-of-8 bidirectional translating switches

     I 2C-bus interface logic; compatible with SMBus standards

     Active LOW reset input

     Three address pins allowing up to eight devices on the I2C-bus

     Channel selection via I2C-bus, in any combination

     Power-up with all switch channels deselected

     Low Ron switches

     Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses

     No glitch on power-up

     Supports hot insertion

     Low standby current

     Operating power supply voltage range of 2.3 V to 5.5 V

     6 V tolerant inputs  0 Hz to 400 kHz clock frequency

     ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

     Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

     Three packages offered: SO24, TSSOP24, and HVQFN24

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