The CXCO4336 is a bidirectional I2 C and SMBUS voltage-level translator with an enable (EN) input, and is operational from 1.2V to 3.3V VREF1 and 2.5V to 5.5V VREF2 . It allows bidirectional voltage translations between 1.2V and 5V, without use of directional pin. The low ON-state resistance (rON) of the switch ensures the connections to be with minimal propagation delay.

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[ CXCO4336 ]"
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产品概述 返回TOP
The CXCO4336 is a bidirectional I2 C and SMBUS voltage-level translator with an enable (EN) input, and is operational from 1.2V to 3.3V VREF1 and 2.5V to 5.5V VREF2 . It allows bidirectional voltage translations between 1.2V and 5V, without use of directional pin. The low ON-state resistance (rON) of the switch ensures the connections to be with minimal propagation delay. When EN is high, the translator switch is ON, and the SCL1 I/O is connected to the SCL2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance exists between ports. In I2 C applications, the bus capacitance limit of 400pF restricts the number of devices and bus length. The system designer could isolate two halves of a bus by using the CXCO4336; thus, more I2 C devices or longer trace length can be accommodated. In standard I2 C system, pull-up resistors are required to provide the logic high levels on the translator’s bus. The size of these pull-up resistors depends on the system, but each side of the repeater must have a pull-up resistor. The CXCO4336 is designed to work with standard-mode and fast-mode I2 C devices. Standard mode I2 C devices only specify 3mA in a generic I2 C system where standard mode devices and multiple masters are possible. Under certain conditions, high termination currents can be used. When the SCL1 or SCL2 port is low, the clamp is in the ON state, and a low resistance connection exists between the SCL1 and SCL2 ports. Assuming the higher voltage is on the SCL2 port, when the SCL2 port is high, the voltage on the SCL1 port is limited to the voltage set by VREF1. When the SCL1 is high, the SCL2 port is pulled up to the drain pull-up supply voltage (VDPU) by pull-up resistors. This function allows a seamless translation between higher and lower voltages selected by the user, without any directional control.
产品特点 返回TOP
„ 1-Bit Bidirectional Translator
„ I 2 C and SMBus Compatible
„ Less than 1.5ns Maximum Propagation Delay to Accommodate Standard-Mode and Fast-Model I 2 C Devices and Multiple Masters
„ Allows Voltage-Level Translator Between
Š 1.2V VREF1 and 2.5V, 3.3V, 5V VREF2
Š 1.8V VREF1 and 3.3V, 5V VREF2
Š 3.3V VREF1 and 5V VREF2
„ Provides Bidirectional Voltage Translation without Direction Pin
„ Low 3.5Ω ON-State Connection Between Input and Output Ports Provides Less Signal Distortion
„ Open-Drain I2 C I/O Ports
„ 5V Tolerant I2 C I/O Ports to Support Mixed Mode Signal Operation
„ High Impedance for SCL1 and SCL2 as EN=Low
„ Lock-up-Free Operation for Isolation When EN=Low
应用范围 返回TOP
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Level Shifter |
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Part NO. |
VDD(V min. |
VDD(V max. |
CH |
IOUT (mA) |
VLOW (V) |
VHIGH (V) |
S/R (ns) |
Note |
Package |
6 |
16 |
5 |
50 |
0 |
18 |
25 |
2 Vcom buffers |
TQFN5X5-32 |
|
-- |
-- |
8 |
500 |
-35 |
35 |
12 |
VGH1-VGL 6-CH,VGH2-VGL 2-CH |
TSSOP20/TQFN4X4-20 |
|
2.6 |
5.5 |
10 |
500 |
-30 |
40 |
700 |
Gate Power |
TQFN5X5-40 |
|
1.2 |
5.5 |
2001-2-4 |
-- |
1.2 |
5 |
17 |
1-2-4-Bit Bidirectional Level Shift, Push-Pull Input/Ouput |
SC70-6/SOT23-6/ AQFN1.7X2.0-12 |
|
2.6 |
5.5 |
9 |
-- |
-30 |
40 |
-- |
N/A |
TQFN5X5-40 |
|
1.2 |
5 |
2 |
-- |
1.2 |
5 |
-- |
1-Bit, 2-Bit Bidirectional I2C Bus&Voltage-Level Shift, Open drain Input/Ouput |
SC70-6/TDFN3X2-8/ADF N3X2-8/AQFN1.5X1.5-8 |
|
1.65 |
5 |
4 |
-- |
1.8 |
5 |
240 |
4-Bit Bidirectional Level-Shift,Open Drain Input/Ouput |
WLCSP3X4-12 |
|
1.2 |
5 |
1 |
-- |
1.2 |
5 |
-- |
1-Bit,2-Bit Bidirectional I2C Bus &Voltage-Level Shift,Open drain Input/Ouput |
SC70-6/TDFN3X2-8/ADF N3X2-8/AQFN1.5X1.5-8 |