Nexperia USA Inc. 74CBTLV3253D,118

Overview

74CBTLV3253D,118 from Nexperia is a dual 1-of-4 CMOS bus switch multiplexer/demultiplexer in SO16 package, operating from 2.3 V to 3.6 V supply, featuring 5 Ω typical ON-resistance, <0.25 ns propagation delay, and IOFF partial power-down protection for hot-swap applications in high-speed digital interconnects.

For engineers reviewing the 74CBTLV3253D,118 datasheet, 74CBTLV3253D,118 pinout, 74CBTLV3253D,118 application, or 74CBTLV3253D,118 equivalent, this device serves as a low-latency, rail-to-rail signal path selector in FPGA I/O expansion, memory address routing, and JTAG boundary-scan test access architectures where ground bounce immunity and sub-1 ns enable/disable timing are critical.

Technical Context

The 74CBTLV3253D implements two independent 1-of-4 bidirectional analog/digital switches controlled by shared S0/S1 select lines and separate 1OE/2OE enable inputs. Each switch exhibits near-zero propagation delay due to its low-impedance MOSFET topology and supports rail-to-rail voltage translation across the full 2.3–3.6 V VCC range.

Schmitt-trigger inputs on S0, S1, 1OE, and 2OE ensure robust noise immunity with slow-edge signals, while the IOFF circuit actively disables all switches during power-down to prevent backflow current-enabling safe live insertion in modular systems.

Key Specifications

Pinout & Package

74CBTLV3253D,118 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or dot; the package is RoHS-compliant and halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 1-of-4 bus switch applications.

Compared with SN74CBTLV3253PWR and 74LVC2G53DP,125, the 74CBTLV3253D,118 offers superior thermal performance in SO16, guaranteed dual-path integration, and tighter RON consistency across temperature-making it optimal for high-reliability, thermally demanding applications.

Availability

74CBTLV3253D,118 is available at Aetrix Electronics and suitable for PCIe Gen1 switching, FPGA I/O expansion, JTAG boundary-scan access, and automotive ECU diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74CBTLV3253D,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, and energy-efficient components for automotive, industrial, and consumer electronics markets.

The 74CBTLV3253D,118 belongs to Nexperia's CBTLV (Configurable Bus Transceiver Low-Voltage) family, engineered specifically for ultra-low-latency, low-power signal routing in high-speed digital systems with stringent power sequencing and hot-swap requirements.

FAQ

What is the maximum recommended load capacitance for maintaining specified propagation delay?

The datasheet specifies dynamic characteristics with 30 pF (for 2.3–2.7 V VCC) and 50 pF (for 3.0–3.6 V VCC) load capacitance. Exceeding these values increases RC delay proportionally; for loads >50 pF, propagation delay exceeds 0.25 ns and must be verified empirically using the test circuit in Figure 16.

Can 74CBTLV3253D,118 operate with 1.8 V logic inputs while powered at 3.3 V?

No. The absolute maximum input voltage is VCC + 0.5 V, and VIH minimum is 2.0 V at VCC = 3.0–3.6 V. A 1.8 V logic signal falls below VIH and may cause indeterminate switching or increased static current; a level shifter is required for 1.8 V ↔ 3.3 V interfacing.

Is the GND pad on the DHVQFN package (SOT763-1) electrically connected?

No. In the DHVQFN16 variant, the exposed thermal pad (pin 1 index area) has no electrical connection and must remain floating or be tied to GND only if soldered-per Note (1) in Figure 4. This does not apply to the SO16 variant (74CBTLV3253D,118), which has no thermal pad.

Does the device support hot-swap without external circuitry?

Yes-when 1OE and 2OE are pulled HIGH via appropriate resistors during power-up, the IOFF circuit ensures all switches remain in high-impedance state until VCC stabilizes. No additional FETs or sequencing logic is needed for safe insertion into live backplanes.