Nexperia USA Inc. CBT16211DGG,112

Overview

CBT16211DGG,112 from NXP Semiconductors (formerly Philips) is a 24-bit TTL-compatible bus switch organized as dual 12-bit sections with independent output-enable controls. It features 5 Ω on-state resistance, 0.25 ns propagation delay (CL = 50 pF), and operates from –40 °C to +85 °C at 4.5–5.5 V supply. Used in high-speed data path isolation and bus multiplexing in telecom backplanes and industrial controllers.

For engineers reviewing the CBT16211DGG,112 datasheet, CBT16211DGG,112 pinout, CBT16211DGG,112 application, or CBT16211DGG,112 equivalent, key selection criteria include dual 12-bit enable control logic, sub-nanosecond timing, low on-resistance switching, and TSSOP-56 thermal and layout compatibility.

Technical Context

The CBT16211DGG implements two independent 12-bit bidirectional analog switches controlled by separate OE inputs (pins 55 and 56), enabling selective connection between port A and port B per section. Each switch exhibits near-zero propagation delay due to its low Ron (5–7 Ω) and minimal parasitic capacitance (CIN = 4.3 pF, COUT = 6.9 pF).

It operates strictly in digital signal pass-through mode-no level shifting, voltage translation, or active buffering. Control inputs are TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and the device enters high-impedance state when OE is high, isolating both ports completely.

Key Specifications

Pinout & Package

CBT16211DGG,112 is housed in a 56-pin plastic thin shrink small outline package (TSSOP), body width 6.1 mm, lead pitch 0.5 mm (SOT364-1). Pin 1 is NC; pins 55 and 56 are 1OE and 2OE; ground (GND) appears on pins 8, 19, 38, and 49; VCC is on pin 17.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTD16211DGGR and 74LVC16244APAG, CBT16211DGG,112 delivers lower on-resistance and true bidirectional switching in a native 24-bit dual-OE configuration-critical for zero-delay bus arbitration and hot-plug-safe isolation where signal direction reversibility matters.

Availability

CBT16211DGG,112 is available at Aetrix Electronics and suitable for telecom line card multiplexing, industrial PLC backplane isolation, and automated test equipment signal routing requiring stable component supply and long-term industrial temperature support.

Supply support for CBT16211DGG,112 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' semiconductor division.

The CBT series was developed specifically for high-speed, low-latency digital bus switching in mission-critical infrastructure-emphasizing minimal propagation delay, precise impedance control, and robust ESD/latch-up performance.

FAQ

Is CBT16211DGG,112 compatible with 3.3 V logic systems?

No. CBT16211DGG,112 is specified only for 4.5–5.5 V operation and TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). Its internal switch architecture requires 5 V supply to achieve rated Ron and timing. Interfacing with 3.3 V systems requires level-shifting circuitry or a different bus switch family such as the 74LVC series.

Can both 12-bit sections be used simultaneously as a single 24-bit switch?

Yes. When both 1OE and 2OE are driven low, all 24 bits conduct bidirectionally between their respective A and B ports. The device's dual-OE design allows either independent 12-bit operation or unified 24-bit switching-no internal reconfiguration is needed beyond OE pin control.

What is the maximum capacitive load this device can drive reliably?

The AC specifications are characterized up to 50 pF load capacitance, with 0.25 ns typical propagation delay. While higher loads may function, timing degrades linearly with CL due to RC constant (Ron × CL). For loads exceeding 50 pF, empirical validation is required-especially above 100 pF, where tpd may exceed 0.5 ns and signal integrity risks increase.

Does CBT16211DGG,112 support hot insertion or live bus swapping?

Yes-its high-impedance off-state (Z), fast enable/disable times (1.5–6.0 ns), and absence of power-on reset or sequencing requirements make it suitable for live bus reconfiguration. However, system-level protection (e.g., series resistors, slew-rate limiting) is recommended to suppress transient currents during dynamic switching under load.