Nexperia USA Inc. CBT16211DGG,118

Overview

CBT16211DGG,118 from NXP Semiconductors (formerly Philips) is a 24-bit TTL-compatible bus switch organized as dual 12-bit sections with independent output-enable inputs, 5 Ω on-state resistance, 0.25 ns propagation delay at 5 V, and operation from –40 °C to +85 °C. It enables high-speed bidirectional data routing in memory expansion, processor interconnect, and peripheral multiplexing applications.

For engineers reviewing the CBT16211DGG,118 datasheet, CBT16211DGG,118 pinout, CBT16211DGG,118 application, or CBT16211DGG,118 equivalent, key selection criteria include dual 12-bit enable control, sub-nanosecond switching latency, low on-resistance for minimal signal degradation, and TSSOP-56 packaging for high-density PCB layouts.

Technical Context

The CBT16211DGG implements two independent 12-bit analog bus switches with separate OE pins (1OE and 2OE), allowing selective activation of either 12-bit segment or simultaneous operation as a 24-bit path. Each switch exhibits symmetrical bidirectional conduction with no directionality constraint.

Its logic interface accepts TTL-level control signals (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) and operates from 4.5 V to 5.5 V supply. The device achieves 0.25 ns typical propagation delay under 50 pF load due to low r_on (5–7 Ω) and minimal parasitic capacitance (C_IN = 4.3 pF, C_OUT(OFF) = 6.9 pF).

Key Specifications

Pinout & Package

CBT16211DGG,118 is housed in a 56-pin plastic thin shrink small outline package (TSSOP), body width 6.1 mm, lead pitch 0.5 mm, compliant with JEDEC MO-153. Pin 1 is marked by a notch or dot; pins 55–56 are 1OE and 2OE respectively.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTD16211DGGR and 74LVC16244APAG, CBT16211DGG,118 uniquely delivers true bidirectional analog switching with sub-ns delay and 5 Ω r_on, making it irreplaceable in time-critical, multi-master bus architectures where signal polarity independence is mandatory.

Availability

CBT16211DGG,118 is available at Aetrix Electronics and suitable for memory expansion interfaces, processor bus multiplexing, and PCI/ISA local bus extension requiring stable component supply and long-term industrial availability.

Supply support for CBT16211DGG,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

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

The CBT series was developed specifically for high-speed, low-latency digital interconnect in 5 V systems, targeting applications demanding analog-switch performance without the complexity of active buffers or level translators.

FAQ

What is the maximum operating frequency supported by CBT16211DGG,118?

The CBT16211DGG,118 does not specify a clock frequency but supports signal edges with <0.25 ns propagation delay and <7 Ω on-resistance, enabling reliable operation up to 200–300 MHz in well-terminated 50 Ω systems. Its performance is governed by RC time constant (r_on × C_L) rather than a fixed clock rate.

Can CBT16211DGG,118 operate at 3.3 V supply?

No. The CBT16211DGG,118 is specified only for 4.5–5.5 V operation. Its TTL-compatible inputs require V_IH ≥ 2.0 V and V_IL ≤ 0.8 V, and its internal switch architecture is optimized for 5 V rail. Operation below 4.5 V may result in undefined r_on, increased ICC, or failure to meet timing specs.

Are the 1A/1B and 2A/2B ports truly bidirectional?

Yes. The CBT16211DGG,118 uses passive FET-based analog switches with no intrinsic directionality. Signals pass equally well from A-to-B or B-to-A when the corresponding OE is low. This is confirmed by the function table, pin descriptions, and absence of directional symbols in the logic diagram.

Does CBT16211DGG,118 require external pull-up or pull-down resistors on OE pins?

No. The OE inputs are TTL-compatible with defined V_IH (≥2.0 V) and V_IL (≤0.8 V) thresholds. When driven directly from 5 V logic outputs, no external biasing is needed. However, if left floating, OE defaults to high (disabled state) due to internal protection circuitry - explicit termination is recommended for noise immunity in high-noise environments.