Nexperia USA Inc. 74AVCH16T245DGG,18

Overview

74AVCH16T245DGG,18 from Nexperia is a 16-bit dual-supply translating transceiver with bidirectional level-shifting, 3-state outputs, and independent VCC(A)/VCC(B) rails (0.8 V–3.6 V). It functions as two configurable 8-bit transceivers or one unified 16-bit unit, enabling voltage translation between 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains. Its IOFF circuitry ensures partial power-down safety, bus-hold eliminates external resistors, and it operates across –40 °C to +125 °C for industrial interface bridging.

For engineers reviewing the 74AVCH16T245DGG,18 datasheet, 74AVCH16T245DGG,18 pinout, 74AVCH16T245DGG,18 application, or 74AVCH16T245DGG,18 equivalent, key selection criteria include dual-rail voltage translation range, 380 Mbit/s max data rate (≥1.8 V → 3.3 V), suspend-mode behavior, IOFF leakage specs, and TSSOP48 pin compatibility in mixed-voltage SoC interconnects.

Technical Context

This device implements true bidirectional voltage translation using separate input-referenced control logic: nDIR and nOE inputs are referenced to VCC(A), while B-side I/O pins are referenced to VCC(B). Direction control is static-HIGH on nDIR enables A→B transmission; LOW enables B→A. Output enable is active-low, placing both ports in high-impedance when nOE is HIGH.

Suspend mode activates when either VCC(A) or VCC(B) = GND, forcing all A/B outputs into high-impedance regardless of control inputs. Bus-hold circuitry remains active on the powered side only, maintaining valid logic levels on unused A or B inputs without external biasing-critical for hot-swap and low-power standby states.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 6.1 mm body width, 0.5 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply translating transceiver applications.

Compared with SN74AVCH16T245DGGR and 74LVC16T245PW,118, the 74AVCH16T245DGG,18 uniquely delivers extended-temperature operation, true independent rail control, and integrated bus-hold-making it the sole choice for thermally demanding, mixed-voltage, hot-swap-capable designs.

Availability

74AVCH16T245DGG,18 is available at Aetrix Electronics and suitable for PCIe add-in card interfaces, industrial PLC backplanes, automotive ADAS camera links, and server memory subsystems requiring stable component supply across extended temperature ranges and mixed-voltage domains.

Supply support for 74AVCH16T245DGG,18 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and computing markets.

The 74AVCH16T245 belongs to Nexperia's advanced voltage-translating logic family, engineered specifically for reliable, low-latency bridging between heterogeneous voltage domains in space-constrained, thermally aggressive embedded systems.

FAQ

Can 74AVCH16T245DGG,18 translate between 0.8 V and 3.3 V simultaneously?

Yes. With VCC(A) = 0.8 V and VCC(B) = 3.3 V, the device supports bidirectional translation at up to 200 Mbit/s. The A-side inputs are referenced to 0.8 V, while B-side I/Os operate at 3.3 V logic levels. Control signals (nDIR/nOE) remain referenced to VCC(A), ensuring correct interpretation even at sub-1 V.

What happens to outputs during suspend mode when VCC(A) = 0 V and VCC(B) = 3.3 V?

Both A-side and B-side outputs enter high-impedance (3-state) regardless of nDIR or nOE states. The bus-hold circuit remains active only on the powered B-side, holding floating B inputs at valid logic levels. A-side inputs float but present <±5 μA leakage, preventing unintended current paths.

Is external termination required for 380 Mbit/s operation?

No external series termination is required for basic functionality, but controlled-impedance PCB routing (50 Ω single-ended) and ≤15 pF load capacitance are mandatory to achieve 380 Mbit/s. The device's typical CPD is 13.7 pF at 3.3 V, so layout-induced capacitance must stay below 1.3 pF to meet timing margins.

How does bus-hold current scale with supply voltage?

Bus-hold sink/source current increases with VCC: at 1.2 V, IBHL/IBHH ≈ ±25 μA; at 3.0 V, it reaches ±100 μA. This ensures stronger hold strength at higher voltages while remaining within ±500 μA overdrive limits-sufficient to override typical noise margins without loading drivers.