Texas Instruments SN74CBTLV16210DLR

Overview

SN74CBTLV16210DLR from Texas Instruments is a 20-bit high-speed FET bus switch IC with dual 10-bit configurable switching, 5-Ω typical on-state resistance (ron), rail-to-rail signal handling (0–3.6 V), and Ioff partial-power-down support. It operates from 2.3 V to 3.6 V supply and delivers sub-nanosecond propagation delay (0.15 ns typ at 2.5 V), enabling low-latency interconnect in memory expansion and FPGA I/O bridging applications.

For engineers reviewing the SN74CBTLV16210DLR datasheet, SN74CBTLV16210DLR pinout, SN74CBTLV16210DLR application, or SN74CBTLV16210DLR equivalent, key selection considerations include its 48-pin SSOP (DL) package, dual independent OE control, 10 µA max ICC at 3.6 V, and guaranteed isolation during power-off via Ioff.

Technical Context

This device implements two independent 10-bit bidirectional analog switches using NMOS pass transistors, each controlled by a dedicated OE input. Its rail-to-rail operation supports full-swing CMOS/TTL signals across the entire 0–VCC range without level translation.

The Ioff feature actively blocks current backflow when VCC = 0 V, ensuring system-level isolation in hot-swap and partial-power-down architectures. Propagation delay is dominated by the RC time constant of ron and load capacitance, not logic gate delay, making timing predictable and voltage-scalable.

Key Specifications

Pinout & Package

SN74CBTLV16210DLR uses a 48-pin Shrink Small-Outline Package (SSOP-DL), 12.6 mm × 6.2 mm body, 0.5 mm lead pitch, 1.2 mm max height, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTLV16210DLR, SN74CBTLV3861RGYR offers smaller footprint but forfeits per-group isolation, while SN74CBT16210DGGR lacks Ioff and rail-to-rail operation-making SN74CBTLV16210DLR the sole option supporting safe 2.3–3.6 V hot-swap interconnect with dual independent control.

Availability

SN74CBTLV16210DLR is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, hot-swappable module backplanes, and legacy peripheral interfacing requiring stable component supply across industrial temperature ranges (−40°C to 85°C).

Supply support for SN74CBTLV16210DLR 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 solutions, with decades of expertise in high-speed logic and interface ICs.

The SN74CBTLV16210DLR belongs to TI's Widebus™ family of high-speed bus switches, designed specifically for low-latency, low-distortion signal routing in memory, FPGA, and modular system interconnects.

FAQ

What is the maximum operating frequency supported by the SN74CBTLV16210DLR?

The SN74CBTLV16210DLR does not specify a clock frequency limit because it is an analog switch-not a clocked logic device. Its 0.15 ns typical propagation delay enables reliable operation with data edges up to ~5 GHz, limited only by PCB layout, load capacitance, and driver strength. System-level bandwidth depends on external factors, not internal clocking.

Does the SN74CBTLV16210DLR require external pull-up resistors on OE pins?

Yes-the SN74CBTLV16210DLR datasheet explicitly recommends tying 1OE and 2OE to VCC through pull-up resistors during power-up/down to guarantee high-impedance state. Minimum resistor value depends on the current-sinking capability of the driving source; typical values range from 4.7 kΩ to 10 kΩ for standard CMOS drivers.

Can the SN74CBTLV16210DLR be used with 1.8 V logic signals?

No-the SN74CBTLV16210DLR requires VCC ≥ 2.3 V for guaranteed operation, and its VIH/VIL thresholds are defined only for VCC = 2.3–3.6 V. Applying 1.8 V signals risks undefined switching behavior and violates recommended operating conditions; use TI's SN74AVC16T245 or similar AVC-series devices for 1.8 V compatibility.

How does the Ioff feature protect the SN74CBTLV16210DLR during partial power-down?

The Ioff feature disables internal conduction paths when VCC = 0 V, limiting leakage current to ≤10 µA even if A/B port voltages range from 0 V to 3.6 V. This prevents back-current flow into a powered-down supply rail-critical for preventing latch-up, bus contention, or damage in multi-rail systems undergoing staggered power sequencing.

Is the SN74CBTLV16210DLR pin-compatible with other members of the CBTLV family?

SN74CBTLV16210DLR shares the same 48-pin SSOP (DL) footprint and pinout with SN74CBTLV16210DL (tube version), but is not pin-compatible with variants like SN74CBTLV16210VR (TVSOP) or SN74CBTLV3861RGYR (VQFN). Always verify package drawing and pin mapping before substitution-even functionally similar devices may differ in pin assignment or thermal pad configuration.