Texas Instruments SN74CBTLV16210VR

Overview

SN74CBTLV16210VR from Texas Instruments is a 20-bit FET bus switch IC with dual 10-bit configurable switching, 5-Ω typical on-state resistance, rail-to-rail signal handling (0–3.6 V), and I_off support for partial-power-down operation. It serves as a high-speed bidirectional data path selector in memory expansion, FPGA I/O bridging, and hot-swap backplane interfaces.

For engineers reviewing the SN74CBTLV16210VR datasheet, SN74CBTLV16210VR pinout, SN74CBTLV16210VR application, or SN74CBTLV16210VR equivalent, key selection criteria include its 0.15 ns propagation delay at 2.5 V, 2000-unit tape-and-reel availability in TVSOP-48, ±10 µA I_off leakage at V_CC = 0 V, and dual independent OE control enabling flexible 10-bit/20-bit partitioning.

Technical Context

This device implements two independent 10-bit transmission-gate bus switches using NMOS pass transistors with complementary gate drive, enabling true bidirectional, low-distortion signal routing without direction control pins. Each switch channel exhibits matched on-resistance across input voltage range and supports 30 pF load capacitance with sub-nanosecond timing.

Its I_off circuitry actively isolates A/B ports when V_CC = 0 V, preventing backflow current up to ±3.6 V at terminals - critical for live-insertion systems. OE inputs are CMOS-compatible with V_IL ≤ 0.8 V and V_IH ≥ 2.0 V at 3.6 V supply, and require external pull-up to V_CC for power-up high-impedance safety.

Key Specifications

Pinout & Package

SN74CBTLV16210VR is housed in a 48-pin TVSOP (DGV) package measuring 12.6 mm × 6.1 mm × 1.2 mm (max height), JEDEC MO-153 compliant, with 0.4 mm pitch gull-wing leads and exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTLV16210VR, SN74CBT16210DGGR offers identical electrical performance in a marginally taller package, while SN74LVC1G3157DCKR trades integration and power-down safety for extreme miniaturization - making SN74CBTLV16210VR optimal for industrial backplanes requiring reliability, density, and hot-swap robustness.

Availability

SN74CBTLV16210VR is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, hot-swap backplane interconnects, test access multiplexing, and industrial control bus arbitration requiring stable component supply and long-term lifecycle support.

Supply support for SN74CBTLV16210VR 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 SN74CBTLV16210VR belongs to TI's Widebus™ family of high-speed bus switches, engineered specifically for low-latency, low-distortion data routing in memory, FPGA, and telecom infrastructure applications.

FAQ

What is the maximum operating frequency supported by the SN74CBTLV16210VR?

The SN74CBTLV16210VR does not specify a clock frequency limit because it is an analog bus switch, not a clocked device. Its 0.15 ns propagation delay enables reliable operation with signal edges faster than 3 GHz, provided PCB layout controls impedance and crosstalk. System-level bandwidth depends on load capacitance, trace length, and driver strength - not an internal clock.

Does the SN74CBTLV16210VR require external pull-up resistors on OE pins?

Yes - to ensure high-impedance state during power-up or power-down, OE pins must be tied to V_CC via pull-up resistors. The minimum value depends on the current-sinking capability of the driving source; TI recommends evaluating based on the driver's I_OL spec and desired rise time, typically 1–10 kΩ for standard CMOS drivers.

Can the SN74CBTLV16210VR operate with 2.5 V and 3.3 V supplies simultaneously?

No - SN74CBTLV16210VR uses a single V_CC supply (2.3–3.6 V) powering both logic and switch circuitry. It supports rail-to-rail signal voltages (0–V_CC), so 2.5 V or 3.3 V systems are supported individually, but mixed-supply operation on one device is not possible. For dual-voltage domain bridging, use two separate SN74CBTLV16210VR units with isolated V_CC rails.

Is the SN74CBTLV16210VR RoHS compliant and lead-free?

Yes - SN74CBTLV16210VR is RoHS compliant with NIPDAU (nickel/palladium/gold) lead finish, rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), and qualified for peak reflow at 260°C. Full compliance documentation, including material declarations and test reports, is available through TI's Quality & Environmental page.

How does the I_off feature protect the SN74CBTLV16210VR during partial power-down?

The I_off circuitry in SN74CBTLV16210VR disables internal conduction paths when V_CC = 0 V, limiting leakage current to ≤10 µA even if A or B port voltages range from −0.5 V to 3.6 V. This prevents reverse current flow into unpowered sections, protecting downstream circuitry and meeting IEC 61000-4-5 surge isolation requirements for hot-swap systems.