Nexperia USA Inc. CBTD3306PW,118

Overview

CBTD3306PW,118 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, TTL-compatible inputs, and operation across -40 °C to +85 °C - used in mixed-voltage memory/data bus isolation on industrial microcontroller boards.

For engineers reviewing the CBTD3306PW,118 datasheet, CBTD3306PW,118 pinout, CBTD3306PW,118 application, or CBTD3306PW,118 equivalent, key selection criteria include bidirectional level-shifting performance, IOFF-enabled partial power-down, low propagation delay (<0.25 ns), and TSSOP8 package compatibility with high-density PCB layouts.

Technical Context

The CBTD3306PW 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 nOE is LOW, placing the A–B path in low-impedance state; HIGH nOE forces high-impedance OFF-state with <6.5 pF off-capacitance.

Its internal diode structure enables robust 5 V to 3.3 V level shifting without external components. The device supports bidirectional signal flow, maintains signal integrity via sub-5 Ω RON, and includes IOFF circuitry that disables switch leakage during power-down, meeting JESD78B latch-up immunity (>100 mA) and HBM ESD tolerance (>2000 V).

Key Specifications

Pinout & Package

TSSOP8 plastic thin shrink small outline package (SOT530-1), 8-lead, 4.4 mm body width, 0.65 mm pitch, 1.1 mm height - optimized for automated assembly and thermal dissipation in space-constrained applications.

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,125, the CBTD3306PW,118 delivers superior level-shifting integration, lower RON, and true dual-channel independence in a single TSSOP8 footprint - making it optimal for space-constrained, mixed-voltage bus isolation where timing and BOM simplicity are critical.

Availability

CBTD3306PW,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded memory interfaces, automotive infotainment debug ports, and automated test equipment requiring stable component supply and long-term manufacturability.

Supply support for CBTD3306PW,118 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, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for industrial and consumer applications.

The CBTD3306 belongs to Nexperia's advanced bus switch family, engineered specifically for voltage-domain bridging in mixed-supply digital systems - emphasizing low RON, fast switching, and IOFF-enabled power management.

FAQ

Does CBTD3306PW,118 support bidirectional signal flow without external direction control?

Yes. Each switch channel (1A↔1B and 2A↔2B) operates bidirectionally with no direction pin required. Signal translation occurs automatically based on relative voltage levels at A and B ports, enabled only when the corresponding nOE is LOW. This eliminates external control logic and simplifies PCB routing in mixed-voltage interconnects.

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). However, for reliable long-term operation within recommended conditions, the typical RON of 5 Ω at 4.5 V implies practical limits around 20–30 mA to maintain <150 mV pass voltage and avoid thermal stress - consistent with its use in digital bus signaling rather than power distribution.

Can CBTD3306PW,118 be used with 2.5 V or 1.8 V logic domains?

No. The device is characterized and guaranteed only for 5 V ↔ 3.3 V level shifting. Its TTL-compatible inputs require VIH ≥ 2.0 V and VIL ≤ 0.8 V, and internal FET threshold design assumes VCC ≥ 4.5 V. Operation below 3.3 V on either side risks incomplete turn-on, increased RON, and undefined logic states - confirmed by Nexperia's recommended operating conditions (Table 6).

Is the TSSOP8 package (SOT530-1) RoHS compliant and lead-free?

Yes. The CBTD3306PW,118 uses a lead-free, RoHS-compliant TSSOP8 package (SOT530-1) with matte tin finish on leads. Nexperia confirms full compliance with EU RoHS Directive 2011/65/EU and REACH SVHC regulations, and the device meets JEDEC J-STD-020 moisture sensitivity level MSL3 for standard SMT assembly processes.