PCA9306DCTR PCA9306DCUR PCA9306DQER Programmable Logic ICS Voltage Levels Dual BiDir I2C-Bus & SMBus Vltg Lvl-Trans
logic integrated circuits
,programmable logic array ic
PCA9306DCTR PCA9306DCUR PCA9306DQER Programmable Logic ICS Voltage Levels Dual BiDir I2C-Bus & SMBus Vltg Lvl-Trans
1 Features
- 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 VREF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V VREF2
-
– 1.8-V VREF1 and 2.5-V, 3.3-V, or 5-V VREF2
-
– 2.5-V VREF1 and 3.3-V or 5-V VREF2
-
– 3.3-V VREF1 and 5-V VREF2
-
-
Provides Bidirectional Voltage Translation with no Direction Pin
-
Low 3.5-Ω ON-state Resistance 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
-
High-impedance SCL1, SDA1, SCL2, and SDA2 pins for EN = Low
-
Lockup-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)
-1000-V Charged-Device Model (C101)
2 Applications
• I2C, SMBus, PMBus, MDIO, UART, low-speed SDIO, GPIO, and other two-signal interfaces
• Servers
• Routers (Telecom Switching Equipment)
• Personal Computers
• Industrial Automation
3 Description
The PCA9306 device is a dual bidirectional I2C and SMBus voltage-level translator with an enable (EN) input, and is operational from 1.2-V to 3.3-V VREF1 and 1.8-V to 5.5-V VREF2.
The PCA9306 device allows bidirectional voltage translations between 1.2 V and 5 V, without the use of a direction pin. The low ON-state resistance (RON) of the switch allows connections to be made with minimal propagation delay. When EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports.
In addition to voltage translation, the PCA9306 device can be used to isolate a 400-kHz bus from a 100-kHz bus by controlling the EN pin to disconnect the slower bus during fast-mode communication.
Device Information
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
PCA9306 |
SSOP (8) |
2.95 mm x 2.80 mm |
VSSOP (8) |
2.30 mm x 2.00 mm |
|
X2SON (8) |
1.40 mm x 1.00 mm |
|
DSBGA (8) |
1.98 mm x 0.98 mm |

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