Renesas 74CBTLV16212PAG8

Overview

74CBTLV16212PAG8 from Renesas Electronics is a low-voltage 24-bit bus exchange switch with bi-directional 5Ω switches, operating across 2.3V–3.6V supply range and supporting industrial temperature (–40°C to +85°C). It enables dynamic data path reconfiguration between four signal ports using S0–S2 select lines and features break-before-make switching for zero-current transitions. Used in high-speed 3.3V bus isolation and exchange applications in telecom backplanes and FPGA I/O expansion.

For engineers reviewing the 74CBTLV16212PAG8 datasheet, 74CBTLV16212PAG8 pinout, 74CBTLV16212PAG8 application, or 74CBTLV16212PAG8 equivalent, key selection criteria include its 250ps max propagation delay, over-voltage tolerance, power-off isolation, latch-up immunity (>100mA), and TSSOP-56 package compatibility with dense PCB layouts.

Technical Context

The 74CBTLV16212PAG8 implements a configurable 24-bit switch matrix with dual-mode operation: as a single 24-bit bus switch or as a 12-bit bus exchanger routing signals between A1/A2 and B1/B2 port groups. Its break-before-make logic prevents short-circuit transients during port switching.

Each switch exhibits low on-resistance (5Ω typical at VCC = 3.3V, IO = 24mA) and supports bi-directional signal flow with <250ps propagation delay. Control inputs (S0–S2) are over-voltage tolerant up to 4.6V and require no external pull-ups when tied to VCC or GND per functional table requirements.

Key Specifications

Pinout & Package

74CBTLV16212PAG8 is housed in a 56-pin Thin Shrink Small Outline Package (TSSOP), measuring 14.0mm × 6.1mm × 1.2mm, with 0.5mm lead pitch and exposed thermal pad (non-electrical). The package supports automated optical inspection and standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTLV16212PAG and 74LVC16245APAG, the 74CBTLV16212PAG8 uniquely delivers programmable 24-bit bidirectional exchange with sub-0.25ns delay and break-before-make safety-making it irreplaceable for dynamic bus topology changes where timing, isolation, and zero-current switching are mandatory.

Availability

74CBTLV16212PAG8 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and FPGA-based embedded systems requiring stable component supply across extended product lifecycles.

Supply support for 74CBTLV16212PAG8 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.

The 74CBTLV16212PAG8 belongs to Renesas' legacy IDT logic portfolio, designed specifically for high-speed, low-latency bus reconfiguration in industrial and communications equipment where reliability under voltage and thermal stress is critical.

FAQ

What is the maximum operating frequency supported by the 74CBTLV16212PAG8?

The 74CBTLV16212PAG8 does not specify a clock frequency but supports signal bandwidths exceeding 1 GHz due to its 5Ω on-resistance and <250ps propagation delay. Real-world usable frequency depends on load capacitance and driver strength; with 30pF load and 24mA drive, it reliably handles NRZ data streams up to 2.5 Gbps in point-to-point configurations. The 74CBTLV16212PAG8 is optimized for parallel bus switching-not serial protocols-so timing margins must be verified per application layout.

Does the 74CBTLV16212PAG8 require external pull-up or pull-down resistors on S0–S2 control pins?

No, the 74CBTLV16212PAG8 does not require external biasing on S0–S2. Per datasheet Note 1, all unused control inputs must be held at VCC or GND-achievable directly via MCU GPIOs or hard-wired connections. The input thresholds (VIH ≥ 2.0V at VCC = 3.6V, VIL ≤ 0.8V) ensure noise-immune operation without resistive termination. This simplifies design and reduces BOM count for the 74CBTLV16212PAG8 in space-constrained applications.

Can the 74CBTLV16212PAG8 be used with 2.5V-only systems?

Yes, the 74CBTLV16212PAG8 is fully specified down to VCC = 2.3V and operates reliably at 2.5V ± 0.2V. At this voltage, RON remains ≤ 8Ω (typical), tPD stays within 0.25ns, and VIH/VIL thresholds scale accordingly (VIH ≥ 1.7V, VIL ≤ 0.7V). System designers using 2.5V logic families can deploy the 74CBTLV16212PAG8 without level shifters, preserving signal integrity and reducing component count.

How does the break-before-make feature work in the 74CBTLV16212PAG8?

The 74CBTLV16212PAG8 implements internal timing control that ensures all switches disconnect before any new path connects-verified by functional table states L-L-H through H-H-H. This eliminates transient short circuits between B1 and B2 ports during mode changes, limiting peak current to <1µA. The behavior is intrinsic to the silicon design and requires no external timing circuitry, making the 74CBTLV16212PAG8 safe for live bus reconfiguration in mission-critical systems.

Is the 74CBTLV16212PAG8 RoHS compliant and halogen-free?

Yes, the 74CBTLV16212PAG8 is RoHS compliant and halogen-free, as confirmed by Renesas' ordering information indicating "G" suffix (Green) and compliance documentation referenced in the datasheet revision history. The TSSOP-56 package uses matte tin lead finish and meets JEDEC JS-001 ESD standards. Full material declarations and certificate of compliance are available upon request for the 74CBTLV16212PAG8 to support environmental audits and export compliance.