Product Summary

The PCA9548APW is an octal bidirectional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. An active LOW reset input allows the PCA9548APW 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 PCA9548APW.

Parametrics

PCA9548APW absolute maximum ratings: (1)supply voltage:-0.5 to +7.0 V; (2)input voltage:-0.5 to +7.0 V; (3)input current:±20 mA; (4)output current:±25 mA; (5)supply current:±100 mA; (6)ground supply current:±100 mA; (7)total power dissipation:400 mW; (8)storage temperature:-60 to +150℃; (9)ambient temperature:-40 to +85℃.

Features

PCA9548APW features: (1)1-of-8 bidirectional translating switches; (2)I2C-bus interface logic; compatible with SMBus standards; (3)Active LOW reset input; (4)3 address pins allowing up to 8 devices on the I2C-bus; (5)Channel selection via I2C-bus, in any combination; (6)Power-up with all switch channels deselected; (7)Low Ron switches; (8)Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses; (9)No glitch on power-up; (10)Supports hot insertion; (11)Low standby current; (12)Operating power supply voltage range of 2.3 V to 5.5 V; (13)5 V tolerant inputs; (14)0 Hz to 400 kHz clock frequency; (15)ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101; (16)Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA; (17)Three packages offered: SO24, TSSOP24, and HVQFN24.

Diagrams

PCA9548APW block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
PCA9548APW
PCA9548APW
Texas Instruments
Multiplexer Switch ICs 4Ch I2C & SMBus Multiplexer
Data Sheet
0-1: $1.97
1-25: $1.80
25-100: $1.45
100-250: $1.27
PCA9548APW,112
PCA9548APW,112
NXP Semiconductors
Multiplexer Switch ICs I2C SWITCH 8CH
Data Sheet
0-1: $0.80
1-25: $0.73
25-100: $0.69
100-250: $0.65
PCA9548APW,118
PCA9548APW,118
NXP Semiconductors
Multiplexer Switch ICs 8-CH I2C SWITCH W/RESET
Data Sheet
0-1: $1.02
1-25: $0.92
25-100: $0.76
100-250: $0.71
PCA9548APWR
PCA9548APWR
Texas Instruments
Multiplexer Switch ICs 8-Channel I2C Switch with Reset
Data Sheet
0-1: $1.72
1-25: $1.42
25-100: $1.28
100-250: $1.18
PCA9548APWG4
PCA9548APWG4
Texas Instruments
Multiplexer Switch ICs 8-Ch I2C Sw
Data Sheet
0-1: $1.97
1-25: $1.66
25-100: $1.45
100-250: $1.27
PCA9548APWRG4
PCA9548APWRG4
Texas Instruments
Multiplexer Switch ICs 8-Ch I2C Sw
Data Sheet
0-1490: $0.93
1490-2000: $0.90
2000-5000: $0.86