PCA9306-Q1 Datasheet, PDF (1/12 Pages) Texas Instruments – DUAL BIDIRECTIONAL I2C BUS AND SMBus VOLTAGE-LEVEL TRANSLATOR

www.ti.com
FEATURES
• Qualified for Automotive Applications
• 2-Bit Bidirectional Translator for SDA and SCL
Lines in Mixed-Mode I²C Applications
• I²C and SMBus Compatible
• Less Than 1.5-ns Maximum Propagation Delay
to Accommodate Standard-Mode and
Fast-Mode I²C Devices and Multiple Masters
• Allows Voltage-Level Translation Between
– 1.2-V V_REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V
V_REF2
– 1.8-V V_REF1 and 2.5-V, 3.3-V or 5-V V_REF2
– 2.5-V V_REF1 and 3.3-V or 5-V V_REF2
– 3.3-V V_REF1 and 5-V V_REF2
• Provides Bidirectional Voltage Translation
With No Direction Pin
• Low 3.5-Ω ON-State Connection Between
Input and Output Ports Provides Less Signal
Distortion
• Open-Drain I²C I/O Ports (SCL1, SDA1, SCL2,
and SDA2)
• 5-V Tolerant I²C I/O Ports to Support
Mixed-Mode Signal Operation
PCA9306-Q1
DUAL BIDIRECTIONAL I²C BUS AND SMBus
VOLTAGE-LEVEL TRANSLATOR
SCPS178 – JULY 2007
• High-Impedance SCL1, SDA1, SCL2, and
SDA2 Pins for EN = Low
• Lock-Up-Free Operation for Isolation When
EN = Low
• Flow-Through Pinout for Ease of Printed
Circuit Board Trace Routing
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DCU PACKAGE
(TOP VIEW)
GND 1
V_REF1 2
SCL1 3
SDA1 4
8 EN
7
V_REF2
6 SCL2
5 SDA2
PIN
SYMBOL
FUNCTION
1
GND
Ground, 0 V
2
V_REF1
Low-voltage-side reference supply voltage for SCL1 and SDA1
3
SCL1
Serial clock, low-voltage side. Connect to V_REF1 through a pullup resistor.
4
SDA1
Serial data, low-voltage side. Connect to V_REF1 through a pullup resistor.
5
SDA2
Serial data, high-voltage side. Connect to V_REF2 through a pullup resistor.
6
SCL2
Serial clock, high-voltage side. Connect to V_REF2 through a pullup resistor.
7
V_REF2
High-voltage-side reference supply voltage for SCL2 and SDA2
8
EN
Switch enable input. Connected to V_REF2 and pulled up through a high resistor.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated