Texas Instruments SN74CBTLV16210GR

Overview

SN74CBTLV16210GR from Texas Instruments is a 20-bit high-speed FET bus switch organized as dual 10-bit switches, featuring 5-Ω on-state resistance, rail-to-rail switching, and Ioff partial-power-down support. It operates from 2.3 V to 3.6 V and delivers sub-nanosecond propagation delay (0.15 ns typical at 2.5 V), enabling low-latency signal routing in memory expansion and FPGA interconnect applications.

For engineers reviewing the SN74CBTLV16210GR datasheet, SN74CBTLV16210GR pinout, SN74CBTLV16210GR application, or SN74CBTLV16210GR equivalent, this device serves as a low-impedance bidirectional switch for hot-swap-capable data buses, high-speed test access ports, and multi-FPGA board-level interconnects requiring minimal signal degradation and power-off isolation.

Technical Context

The SN74CBTLV16210GR implements two independent 10-bit transmission-gate-based bus switches, each controlled by a dedicated OE input. Its FET architecture enables true bidirectional, voltage-transparent switching without level translation-signals pass unaltered between A and B ports when enabled.

Each switch channel exhibits matched on-resistance (5–8 Ω typical) across the full 0–3.6 V signal range and supports Ioff protection: when VCC = 0 V, leakage remains ≤10 µA with inputs/outputs biased from 0 to 3.6 V, preventing backdrive current during partial power-down sequences.

Key Specifications

Pinout & Package

TSSOP-48 package (DGG), 12.6 mm × 6.1 mm × 1.2 mm max height, JEDEC MO-153 compliant, with exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTLV16210GR, SN74CBTLV3861RGYR offers greater density but sacrifices independent control granularity, while SN74CBT16210DGGR trades modern low-voltage efficiency and Ioff safety for legacy 5-V compatibility-making SN74CBTLV16210GR optimal for new 2.5/3.3 V industrial and computing designs demanding robust power sequencing.

Availability

SN74CBTLV16210GR is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA interconnects, hot-swappable peripheral hubs, and PCIe sideband signal routing requiring stable component supply across industrial and communications product lifecycles.

Supply support for SN74CBTLV16210GR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in high-reliability components.

The SN74CBTLV16210GR belongs to TI's Widebus™ family of high-speed logic devices, engineered specifically for low-latency, low-distortion signal routing in dense digital systems where power sequencing resilience and signal integrity are critical.

FAQ

What is the maximum operating frequency supported by the SN74CBTLV16210GR?

The SN74CBTLV16210GR does not specify a maximum clock frequency because it is an analog bus switch-not a clocked logic device. Its performance is characterized by propagation delay (0.15–0.25 ns) and bandwidth-limiting parameters including on-resistance (5–8 Ω) and off-capacitance (6.5 pF). In practice, the SN74CBTLV16210GR reliably routes signals up to 500 Mbps in parallel bus applications when used with proper termination and layout, as confirmed by TI's application notes on Widebus™ switching behavior.

Does the SN74CBTLV16210GR require external pull-up resistors on its OE pins?

Yes-the SN74CBTLV16210GR OE pins must be tied to VCC through a pull-up resistor during power-up and power-down to guarantee high-impedance state before internal logic stabilizes. TI recommends a minimum resistor value determined by the driver's current-sinking capability; typical values range from 4.7 kΩ to 10 kΩ. This requirement is explicitly stated in the datasheet to prevent unintended switch activation during supply ramping.

Can the SN74CBTLV16210GR be used to switch analog signals such as audio or sensor outputs?

Yes-the SN74CBTLV16210GR supports rail-to-rail analog switching from 0 V to VCC, making it suitable for low-frequency analog signals like audio bias lines, thermistor readbacks, or DAC outputs-as long as signal slew rate and bandwidth stay within limits imposed by its 5–8 Ω on-resistance and parasitic capacitances. However, it is not specified for high-fidelity audio or precision instrumentation due to lack of THD, noise, or offset specifications; use is limited to general-purpose analog routing where ±10 mV error is acceptable.

Is the SN74CBTLV16210GR pin-compatible with other members of the CBTLV family?

No-the SN74CBTLV16210GR uses a 48-pin TSSOP (DGG) package with a unique pinout optimized for dual 10-bit switching, including four GND pins and dedicated OE controls. It is not pin-compatible with SN74CBTLV3861RGYR (32-pin VQFN) or SN74CBT16210DGGR (48-pin TSSOP but different pin mapping and no Ioff support). Always verify pin assignments against the specific package drawing (DGG0048A) before PCB layout.

What is the thermal performance of the SN74CBTLV16210GR in its TSSOP package?

The SN74CBTLV16210GR in the DGG (TSSOP-48) package has a junction-to-ambient thermal resistance (θJA) of 58°C/W, measured per JESD 51-7 under standard PCB conditions (1-inch² 2-oz copper). At maximum recommended continuous channel current (128 mA) and worst-case VCC (3.6 V), power dissipation remains below 500 mW-well within safe thermal limits for industrial ambient temperatures up to +85°C when mounted on a 2-layer board with adequate copper pour.