TC7QPB9306FK(EL)

Overview

The TC7QPB9306FK(EL) is a CMOS 4-bit dual-supply bus switch designed for bidirectional level shifting between nodes operating at different voltage levels. It supports VCCA ranges of 1.65 V to 5.0 V and VCCB ranges of 2.3 V to 5.5 V, enabling interfaces such as 1.8 V to 5.0 V or 3.3 V to 5.0 V. The device features an active-High Output Enable (OE) input that controls all four channels simultaneously. Key electrical specifications include a maximum ON-resistance of 16.0 Ω, propagation delay up to 1.2 ns, and power-down protection on the OE input with 5.5 V tolerance. It operates within a temperature range of -40 °C to +85 °C.

Feature Summary

• Provides bidirectional level-shifting capability between two independent power supplies without restriction on relative voltage magnitudes.
• Features low ON-resistance to minimize signal loss during data transmission across buses.
• Includes power-down protection at the OE input, allowing safe operation when supplies are off.
• Offers electrostatic discharge protection on all inputs to enhance component reliability.

Applications

• Interfacing digital buses between components operating at different logic voltage levels
• Bidirectional translation in systems requiring isolated power domains
• General-purpose bus switching in low-voltage embedded applications

Procurement Notes

Verify the specific ordering suffix corresponds to the required packaging format, such as reel or cut tape, as indicated by the manufacturer's documentation. Confirm RoHS compliance status directly with Toshiba Semiconductor and Storage prior to procurement. Ensure the design accounts for the active-High enable logic characteristic unique to this part number compared to similar family members.

Selection Notes

Select this component when a single control signal must manage four parallel data lines simultaneously. The active-High OE configuration distinguishes it from the TC7QPB9307FK, which utilizes active-Low enable logic. Consider the maximum ON-resistance and propagation delay limits to ensure compatibility with the target system's timing requirements and voltage interface specifications.

Part Context

This device belongs to the TC7QPB series of low-voltage, low-power CMOS bus switches manufactured by Toshiba Electronic Devices & Storage Corporation. It shares functional similarities with the TC7QPB9307FK but differs in enable polarity. The series is designed for compact surface-mount applications, utilizing the VSSOP14 package to support space-constrained circuit designs requiring efficient voltage level translation.

Replacement Considerations

The TC7QPB9307FK serves as a direct functional substitute within the same package, provided the design accommodates its active-Low Output Enable logic instead of the TC7QPB9306FK's active-High configuration. No other cross-model replacements are confirmed in official documentation.

FAQ

How does the enable logic differ between the TC7QPB9306FK and TC7QPB9307FK?

The TC7QPB9306FK uses an active-High Output Enable (OE) input, meaning the switch is on when OE is High. In contrast, the TC7QPB9307FK uses an active-Low OE input, where the switch is on when OE is Low.

Can the TC7QPB9306FK operate with VCCA higher than VCCB?

No, the operating ranges specify that the VCCA voltage must be lower than the VCCB voltage to ensure normal operation.