Texas Instruments CALVC164245IDGGREP

Overview

CALVC164245IDGGREP from Texas Instruments is a 16-bit dual-octal noninverting level-shifting transceiver with independent 2.5 V/3.3 V (VCCA) and 3.3 V/5 V (VCCB) supply rails, 5.8 ns max propagation delay at 3.3 V, ±24 mA output drive, and 3-state outputs - used for bidirectional voltage translation between mixed-voltage buses in industrial control backplanes and FPGA-to-ASIC interconnects.

For engineers reviewing the CALVC164245IDGGREP datasheet, CALVC164245IDGGREP pinout, CALVC164245IDGGREP application, or CALVC164245IDGGREP equivalent, key selection criteria include dual-supply rail isolation, direction-control timing margins, OE-controlled high-impedance state during power sequencing, and TSSOP-48 thermal performance under sustained 24 mA per channel loading.

Technical Context

The CALVC164245IDGGREP implements two independent 8-bit transceiver sections (A↔B), each with dedicated DIR and OE controls referenced to VCCA. Signal translation operates asynchronously: B-port I/O tolerates up to VCCB + 0.5 V, A-port I/O up to VCCA + 0.5 V, enabling robust 2.5 V ↔ 3.3 V and 3.3 V ↔ 5 V bidirectional conversion without level-shifters on control lines.

Control logic (1DIR, 2DIR, 1OE, 2OE) is powered solely by VCCA, ensuring deterministic startup when VCCA ramps before VCCB. Latch-up immunity exceeds 250 mA per JESD 17, and input transition rate is specified at ≤10 ns/V to prevent metastability in mixed-slew-rate systems.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm body, 0.5 mm pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar level-shifting transceiver applications.

Compared with SN74AVC16T245RHLR and TXB0108PWR, CALVC164245IDGGREP provides guaranteed 5 V-tolerant B-port operation and explicit DIR control for deterministic full-duplex timing - essential in synchronous bus architectures where direction arbitration must be decoupled from data validity.

Availability

CALVC164245IDGGREP is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA-to-ASIC bridges, telecom line-card extensions, and automated test equipment requiring stable component supply across extended temperature and mixed-voltage operating conditions.

Supply support for CALVC164245IDGGREP 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 decades of heritage in industrial-grade logic and interface solutions.

The CALVC164245IDGGREP belongs to TI's ALVC Widebus™ family, engineered for high-speed, low-power, mixed-voltage bus interfacing in mission-critical industrial and communications infrastructure.

FAQ

What voltage levels does CALVC164245IDGGREP support on its A and B ports?

CALVC164245IDGGREP supports VCCA = 2.3–3.6 V (typically 2.5 V or 3.3 V) on the A port and VCCB = 3–5.5 V (typically 3.3 V or 5 V) on the B port. The A port I/O tolerates 0 to VCCA + 0.5 V; the B port tolerates 0 to VCCB + 0.5 V. This allows reliable 2.5 V ↔ 3.3 V and 3.3 V ↔ 5 V bidirectional translation. CALVC164245IDGGREP does not support 1.8 V operation on either port.

How should OE and DIR pins be connected for safe power-up sequencing of CALVC164245IDGGREP?

For safe power-up, OE pins must be tied to VCCA (not VCCB) via a pullup resistor to ensure high-impedance outputs until VCCA is stable. DIR pins should be driven from the same VCCA domain: set low for B→A flow, high for A→B flow. CALVC164245IDGGREP control logic is powered exclusively by VCCA, so delaying VCCB ramp after VCCA prevents bus contention. TI recommends ramping VCCA first, then VCCB.

Can CALVC164245IDGGREP operate with VCCA = 2.5 V and VCCB = 5 V simultaneously?

Yes, CALVC164245IDGGREP is explicitly characterized for VCCA = 2.5 V ± 0.2 V and VCCB = 5 V ± 0.5 V operation. In this configuration, VOH on the A port is ≥1.7 V (min) at IOH = –8 mA, and VOL on the B port is ≤0.55 V (max) at IOL = 24 mA. These values meet standard 2.5 V CMOS and 5 V TTL input thresholds, confirming interoperability. CALVC164245IDGGREP datasheet Figure 4 validates this voltage combination.

What is the maximum data rate supported by CALVC164245IDGGREP in a typical application?

CALVC164245IDGGREP supports data rates up to ~170 Mbps in point-to-point configurations, derived from its 5.8 ns max propagation delay (tpd) and 10 ns/V input transition rate limit. At 100 MHz clock frequency (10 ns period), setup/hold margins remain sufficient for reliable sampling. System-level bandwidth is further constrained by PCB trace impedance, load capacitance (<15 pF recommended), and termination - CALVC164245IDGGREP itself imposes no protocol-level limitation.

Is CALVC164245IDGGREP pin-compatible with other members of the ALVC164245 family?

Yes, CALVC164245IDGGREP shares identical pinout and footprint with CALVC164245IDLREP (SSOP-48) and CALVC164245MDGGREP (extended-temp TSSOP-48). All variants use the same DGG/DL package outline, terminal assignments, and power/ground pin mapping. However, CALVC164245IDGGREP is rated for –40°C to +85°C operation, while CALVC164245MDGGREP supports –55°C to +125°C - thermal derating must be verified per application.