Nexperia USA Inc. CBTD3306GT,115

Overview

CBTD3306GT,115 from Nexperia is a dual FET bus switch with integrated level-shifting capability for 5 V ↔ 3.3 V bidirectional translation, featuring independent 1OE/2OE control, 5 Ω typical ON resistance at 4.5 V supply, and operation across -40 °C to +85 °C ambient. It enables voltage-domain isolation in mixed-supply digital systems such as FPGA I/O expansion and microcontroller peripheral interfacing.

For engineers reviewing the CBTD3306GT,115 datasheet, CBTD3306GT,115 pinout, CBTD3306GT,115 application, or CBTD3306GT,115 equivalent, key selection criteria include its dual-channel independent enable architecture, IOFF partial power-down support, sub-5 ns enable/disable timing, and XSON8 package compatibility with high-density PCB layouts.

Technical Context

The CBTD3306GT implements two independent transmission-gate-based FET switches, each controlled by a dedicated active-low output enable (1OE/2OE) input. Switch conduction occurs only when the respective nOE is LOW, placing the A–B path in low-impedance state; HIGH on nOE forces high-impedance OFF-state with IOFF protection active.

Its level-shifting function arises from internal diode structures enabling bidirectional signal translation between 5 V and 3.3 V logic domains without external biasing. The device operates with TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and supports up to 128 mA per switch under recommended conditions.

Key Specifications

Pinout & Package

XSON8 plastic extremely thin small outline package (SOT833-1); 8-terminal no-lead surface-mount package; body dimensions 1.0 mm × 1.95 mm × 0.5 mm; thermal pad exposed on underside for enhanced PCB heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual bus switch with level shifting applications.

Compared with SN74CBT3306PWR and 74LVC2G66GW, CBTD3306GT,115 uniquely combines dual-channel independence, native 5 V/3.3 V bidirectional translation, and IOFF protection in an ultra-compact XSON8 package - making it optimal for space-constrained industrial controllers needing robust hot-swap capability.

Availability

CBTD3306GT,115 is available at Aetrix Electronics and suitable for FPGA I/O expansion, microcontroller peripheral interface, and memory-mapped peripheral bus applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CBTD3306GT,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.

CBTD3306GT,115 belongs to Nexperia's bus switch and level translator product line, engineered specifically for voltage-domain bridging in resource-constrained embedded systems where size, power, and signal fidelity are critical.

FAQ

Does CBTD3306GT,115 support 5 V to 3.3 V level shifting in both directions?

Yes - the CBTD3306GT,115 provides true bidirectional level shifting between 5 V and 3.3 V domains using internal diode structures. Signals flow from A to B or B to A regardless of which side is driven, with no direction control pin required. This is confirmed in Section 1 (General description) and Table 4 (Function selection) of the datasheet.

What is the maximum continuous current per switch channel?

The absolute maximum switch current is 128 mA per channel, as specified in Table 5 (Limiting values). Under recommended operating conditions (VCC = 4.5–5.5 V, Tamb = -40 °C to +85 °C), sustained current should remain ≤128 mA to avoid exceeding thermal limits or degrading RON performance over time.

Can CBTD3306GT,115 be used with VCC = 0 V while other system rails remain active?

Yes - the IOFF circuitry ensures that when VCC = 0 V, both switches enter high-impedance state and block current flow between A and B ports, even if voltage is present on either side. This behavior is explicitly guaranteed in Section 2 (Features and benefits) and validated per JESD78B latch-up testing.

Is the XSON8 package (SOT833-1) lead-free and RoHS compliant?

Yes - the CBTD3306GT,115 uses a lead-free, halogen-free, and RoHS-compliant XSON8 package (SOT833-1), as documented in Nexperia's official ordering information (Table 1) and environmental compliance statements on their website. The device meets JEDEC J-STD-020 moisture sensitivity level MSL3.