Nexperia USA Inc. 74CBTLVD3384PW,118

Overview

74CBTLVD3384PW,118 from Nexperia is a dual 5-pole, single-throw bus switch optimized for bidirectional 3.3 V to 1.8 V level shifting in high-speed digital interconnects. It features two independent active-low output enable inputs (1OE, 2OE), 5 Ω typical ON-state resistance, 600 MHz bandwidth, and IOFF partial power-down support. It enables voltage translation between mixed-supply domains in DDR memory interfaces and FPGA I/O expansion.

For engineers reviewing the 74CBTLVD3384PW,118 datasheet, 74CBTLVD3384PW,118 pinout, 74CBTLVD3384PW,118 application, or 74CBTLVD3384PW,118 equivalent, key selection criteria include its rail-to-rail switching capability, Schmitt-trigger control inputs for noise immunity, -40 °C to +125 °C operation, TSSOP24 package compatibility, and verified 3.3 V ↔ 1.8 V level-shifting performance under load.

Technical Context

The device implements two independent 5-channel bus switches, each controlled by a dedicated active-low enable input (1OE/2OE), allowing selective isolation of A↔B data paths. Switch conduction is bidirectional with rail-to-rail signal handling and no direction pin required.

Its IOFF circuitry ensures minimal leakage (< ±10 µA) when VCC = 0 V, enabling safe hot-insertion and partial power-down in multi-rail systems. Schmitt-trigger inputs tolerate slow edge rates (up to 200 ns/V), reducing sensitivity to signal integrity degradation on control lines.

Key Specifications

Pinout & Package

TSSOP24 (SOT355-1) package: plastic thin shrink small outline, 24 leads, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height. Pin 1 index marked; GND (pin 12) and VCC (pin 24) are dedicated power terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus switch applications.

Compared with SN74CBT3384CPWR and 74LVC1G3157GW,125, the 74CBTLVD3384PW,118 uniquely combines extended temperature operation, IOFF safety, and dual 5-bit switching in one TSSOP24 package - delivering higher functional density and system-level reliability for industrial and high-speed memory applications.

Availability

74CBTLVD3384PW,118 is available at Aetrix Electronics and suitable for DDR memory interfaces, FPGA I/O expansion, industrial PLC backplanes, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74CBTLVD3384PW,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 focused on high-volume, high-reliability essential semiconductors for automotive, industrial, and computing markets.

The CBTLVD series targets high-speed, low-latency level-shifting in mixed-voltage digital systems - specifically engineered for DDR, FPGA, and processor interconnect applications demanding rail-to-rail switching and robust partial power-down behavior.

FAQ

What is the maximum allowable voltage on the 1OE/2OE control pins?

The 1OE and 2OE inputs are overvoltage tolerant up to 3.6 V regardless of VCC level, enabling direct connection to 3.3 V logic even when the device operates at lower supply voltages. This tolerance is specified in Table 4 (Limiting Values) and confirmed in Section 2 features, ensuring robust interfacing with diverse controller outputs without level-shifting circuitry.

Can 74CBTLVD3384PW,118 be used for unidirectional signal translation only?

Yes - although inherently bidirectional, the device functions correctly for unidirectional use by driving only one port (e.g., A-side) and receiving on the other (B-side). No external diodes or biasing are needed; the CMOS transmission gate structure naturally supports either direction based on signal source/sink configuration.

Does the device support hot-swap operation when VCC is ramping?

Yes - the IOFF circuitry actively limits leakage to ±10 µA when VCC = 0 V, preventing back-current flow into the switch from powered B-port signals. This allows safe insertion into live 1.8 V systems before 3.3 V supply stabilization, as validated in Section 1 (General description) and Table 6 (Static characteristics).

How does Schmitt-trigger action improve noise immunity on enable inputs?

Schmitt-trigger inputs provide >0.5 V hysteresis at 3.3 V supply, meaning VIH and VIL thresholds differ significantly (2.0 V and 0.9 V respectively). This prevents oscillation or false toggling during slow-rising/falling OE signals - especially critical in noisy industrial environments or when driven by open-drain microcontroller pins with weak pull-ups.