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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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Dual Power supply bus switch level shifter capable of voltage level conversion

Toshiba has a lineup of dual power supply level shift bus switches that can convert voltage levels.
You can select the required circuit configuration (SPST, SPDT, etc.) and the number of circuits from the product lineup.
This product group has a configuration similar to a simple switch, does not have drive capability, but is suitable for high-speed signal transmission.
Toshiba also has a product lineup of dual power bus buffers with drive capability as level shifters.

Voltage translation by Dual-supply level shift bus switches

Product Category Product
 Name
Number of
circuits
Package VCCA(V) VCCB(V) Input/Output
Characteristics
(translating up)(VOHU)
Voltage translation
range(V)
Supply voltage
condition
tPLZ/tPZL(ns) @Ta=85℃
Dual supply
Level shift
Bus Switch
TC7MPB9307 SPST 8 TSSOP/US 1.65 to 5.0 2.3 to 5.5 1.4@VCCA=1.65
2.05@VCCA=2.3
2.7@VCCA=3.0
1.4→5.5(A→B)
5.5→1.65(B→A)
VCCA<VCCB VCCA=3.3±0.3、VCCB=5±0.5
11/9 @RL=1kΩ,CL=30 pF

VCCA=2.5±0.2, VCCB=5±0.5
15/13 @RL=1 kΩ,CL=30 pF
TC7MPB9326 SPDT 2
TC7MPB9327
TC7QPB9306 SPST 4
TC7QPB9307
TC7WPB9306 2 US8
TC7WPB9307 2
TC7SPB9306 1 UF6
TC7SPB9307 1
Voltage translation by Dual-supply level shift bus switches

This is a 2-power supply level shift bus switch product that converts the level with an external pull-up resistor.
Since it is a bus switch type, it can be used as an interface between two power supplies without signal direction control (no DIR control).
This product can be used for I2C communication.
Single pole single throw (SPST) and single pole double throw (SPDT) products are available.
Must be used in systems with potential differences where VCCA<VCCB.

Example of level-shifting for an I2C interface

Dual supply level shift bus switch (2bit)
TC7WPB9306FK/TC7WPB9307FK

Example of level-shifting for an I<sup>2</sup>C interface

When the power supply voltage of the master device is lowered from 3.3 V to 1.8 V, the output (SCL / SDA) voltage (VOUT) from the master device falls below the input threshold (VIH) of the slave device, causing malfunction.
Also, the output (SDA) voltage of the slave device will exceed the master's power supply voltage, which can damage the master device.
In such a case, you can easily convert the signal level by placing a level shifter in between.
In the above cases, TC7WPB9306 (SDA, SCL) is an excellent choice. An external pull-up resistor (about 1 kΩ) is required to raise the output to the power supply voltage.

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