Nexperia USA Inc. CBT3253DB,118

Overview

CBT3253DB,118 from Nexperia is a dual 1-of-4 TTL-compatible FET multiplexer/demultiplexer in SO16 (SOT109-1) package, featuring 5 Ω typical ON-resistance, <0.25 ns propagation delay through the switch path, and ±1 μA input leakage current. It enables bidirectional signal routing between two independent A/B port sets in high-speed digital logic, bus isolation, and level-translating I/O expansion applications.

For engineers reviewing the CBT3253DB,118 datasheet, CBT3253DB,118 pinout, CBT3253DB,118 application, or CBT3253DB,118 equivalent, key selection criteria include its 5 Ω low-ON-resistance switch, TTL-level compatibility with overvoltage-tolerant control inputs up to 5.5 V, -40 °C to +85 °C industrial temperature range, and dual-channel 1-of-4 select architecture with independent output enables.

Technical Context

The CBT3253DB,118 implements two independent FET-based analog switches, each with four selectable B-port terminals (1B1–1B4, 2B1–2B4) routed to respective A-port channels (1A, 2A) under S0/S1 binary address control. Both channels operate simultaneously but are isolated electrically when their respective OE pins (1OE, 2OE) are HIGH.

Its TTL-compatible interface accepts 0.8 V max VIL and 2.0 V min VIH at VCC = 4.5–5.5 V, while control inputs tolerate up to 5.5 V regardless of supply voltage. The device uses no internal logic gates-switching is direct FET conduction, eliminating propagation delay through logic stages and minimizing ground bounce.

Key Specifications

Pinout & Package

CBT3253DB,118 is supplied in SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with gull-wing leads and standard JEDEC MS-012 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTD3384ADW and 74LVC1G3157GW, CBT3253DB,118 uniquely delivers dual independent OE control, 5 Ω R_ON, and 5.5 V overvoltage-tolerant inputs-making it optimal for fault-tolerant industrial multiplexing where channel isolation and robustness are prioritized over package size or ultra-wide VCC range.

Availability

CBT3253DB,118 is available at Aetrix Electronics and suitable for PCI Express lane routing, FPGA I/O expansion, legacy bus isolation, and automated test equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for CBT3253DB,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 logic, discrete, and MOSFET solutions, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality standards.

CBT3253DB,118 belongs to Nexperia's CBT (CMOS Bi-directional Transistor) logic family-designed specifically for ultra-low-delay, low-R_ON analog switching in 5 V digital systems where signal integrity and timing predictability are critical.

FAQ

Is CBT3253DB,118 pin-compatible with CBT3253D or CBT3253PW?

Yes-CBT3253DB,118 shares identical pinout and electrical specifications with CBT3253D (SO16) and CBT3253PW (TSSOP16). All three use the same functional diagram, pin numbering, and logic behavior. Only package dimensions differ: DB and D are both SO16 (SOT109-1), while PW is TSSOP16 (SOT403-1). Footprint design must match the specific variant.

Can CBT3253DB,118 operate with VCC = 3.3 V?

No-CBT3253DB,118 is specified only for VCC = 4.5 V to 5.5 V per Table 5. At 3.3 V, R_ON increases significantly (>15 Ω), VIH/VIL thresholds become unreliable, and propagation delay degrades beyond specification. For 3.3 V systems, consider the 74LVC series or NX3DV384 instead.

What is the maximum continuous current per switch channel?

The absolute maximum continuous switch current is 128 mA per channel, as defined in Table 4 (Limiting Values). However, for reliable operation within recommended conditions, the static characteristics table specifies R_ON tested at ≤64 mA (VI = 0 V, II = 64 mA), and thermal limits constrain sustained current to ≤100 mA to maintain junction temperature below 125 °C in typical SO16 PCB layouts.

Does CBT3253DB,118 support hot-swap or live-insertion?

Yes-its overvoltage-tolerant control inputs (rated to 5.5 V independent of VCC) and latch-up immunity (>100 mA) enable safe hot-swap operation. When VCC is unpowered, OE/S0/S1 can be driven to valid logic levels without damage. However, signal switching is disabled until VCC stabilizes above 4.5 V and control inputs meet VIH/VIL thresholds.