PCA9546ABS

I2C Switch / Multiplexer

The PCA9546ABS is a i2c switch / multiplexer from NXP Semiconductors. View the full PCA9546ABS datasheet below including specifications and datasheet sections.

Manufacturer

NXP Semiconductors

Overview

Part: PCA9546A

Type: Quad Bidirectional Translating I2C-bus Switch

Description: The PCA9546A is a quad bidirectional translating switch controlled via the I2C-bus, allowing an upstream SCL/SDA pair to fan out to four downstream pairs, with voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses.

Operating Conditions:

Supply voltage: 2.3 V to 5.5 V
Operating temperature: -40 °C to +85 °C
Clock frequency: 0 Hz to 400 kHz

Absolute Maximum Ratings:

Max supply voltage: +7.0 V
Max input current: -20 mA
Max output current: -25 mA
Max storage temperature: +150 °C

Key Specs:

ON-state resistance (Ron): 5 Ω (typ) at VDD = 3.6 V, VO = 0.4 V, IO = 15 mA
ON-state resistance (Ron): 9 Ω (typ) at VDD = 4.5 V to 5.5 V, VO = 0.4 V, IO = 15 mA
Standby current (Istb): 0.1 mA (typ) at VDD = 3.6 V, no load
Standby current (Istb): 0.3 mA (typ) at VDD = 5.5 V, no load
Input capacitance (Ci): 12 pF (typ) for SCL/SDA inputs
Input/output capacitance (Cio): 3 pF (typ) for pass gate
Power-on reset voltage (VPOR): 1.6 V (typ) at VDD = 2.3 V to 3.6 V
Power-on reset voltage (VPOR): 1.7 V (typ) at VDD = 4.5 V to 5.5 V

Features:

1-of-4 bidirectional translating switches
I2C-bus interface logic; compatible with SMBus standards
Active LOW reset input
3 address pins allowing up to 8 devices on the I2C-bus
Channel selection via I2C-bus, in any combination
Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses
5 V tolerant Inputs
Low standby current

Applications:

Package:

HVQFN16 (16 terminals; body 4 × 4 × 0.85 mm)
SO16 (16 leads; body width 3.9 mm)
TSSOP16 (16 leads; body width 4.4 mm)

Pin Configuration

Table 3. Pin description

Symbol	Pin	Pin	Description
Symbol	SO16, TSSOP16	HVQFN16	Description
A0	1	15	address input 0
A1	2	16	address input 1
RESET	3	1	active LOW reset input
SD0	4	2	serial data 0
SC0	5	3	serial clock 0
SD1	6	4	serial data 1
SC1	7	5	serial clock 1
V SS	8	6 [1]	supply ground
SD2	9	7	serial data 2
SC2	10	8	serial clock 2
SD3	11	9	serial data 3
SC3	12	10	serial clock 3
A2	13	11	address input 2
SCL	14	12	serial clock line
SDA	15	13	serial data line
V DD	16	14	supply voltage

Package Information

UNIT	A max.	A 1	A 2	A 3	b p	c	D (1)	E (1)	e	H E	L	L p	Q	v	w	y	(1) Z	q
mm	1.75	0.25 0.10	1.45 1.25	0.25	0.49 0.36	0.25 0.19	10.0 9.8	4.0 3.8	1.27	6.2 5.8	1.05	1.0 0.4	0.7 0.6	0.25	0.25	0.1	0.7 0.3	8 o
inches	0.069	0.010 0.004	0.057 0.049	0.01	0.019 0.014	0.0100 0.0075	0.39 0.38	0.16 0.15	0.05	0.244 0.228	0.041	0.039 0.016	0.028 0.020	0.01	0.01	0.004	0.028 0.012	0 o

OUTLINE VERSION	REFERENCES	REFERENCES	REFERENCES	EUROPEAN PROJECTION	ISSUE DATE
OUTLINE VERSION	IEC	JEDEC	JEITA
SOT109-1	076E07	MS-012			99-12-27 03-02-19

Fig 18. Package outline SOT109-1 (SO16)

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
PCA9546A	NXP Semiconductors	TVSOP (DGV)
PCA9546AD	NXP Semiconductors	—
PCA9546APW	NXP Semiconductors	—

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