Texas Instruments SN74ALVCH162820DGG

Overview

SN74ALVCH162820DGG from Texas Instruments is a 3.3-V, 10-bit edge-triggered D-type flip-flop with dual outputs (Q1/Q2 per bit) and 3-state outputs, designed for 1.65-V to 3.6-V V_CC operation. It features bus-hold on all data inputs, integrated 26-Ω series output resistors, and operates across –40°C to 85°C - enabling robust data latching and bus interfacing in high-density memory and control subsystems.

For engineers reviewing the SN74ALVCH162820DGG datasheet, SN74ALVCH162820DGG pinout, SN74ALVCH162820DGG application, or SN74ALVCH162820DGG equivalent, key selection criteria include dual-output timing alignment, 3-state bus drive capability without external termination, bus-hold input retention, and compatibility with 1.65–3.6-V mixed-voltage logic systems.

Technical Context

This device implements ten independent D-type flip-flops, each triggered on the positive clock edge, with separate Q1 and Q2 true outputs per channel. Output-enable (OE) controls all 20 outputs simultaneously into high-impedance or active states without affecting internal latch operation - supporting hot-swap and shared-bus arbitration.

The SN74ALVCH162820DGG uses TI's EPIC™ submicron CMOS process and Widebus™ architecture, delivering low propagation delay (t_pd = 5.4 ns at V_CC = 3.3 V), rail-to-rail output swing, and ESD protection exceeding 2000 V (HBM) and 200 V (MM). Bus-hold circuitry actively maintains valid logic levels on floating D inputs without external pull resistors.

Key Specifications

Pinout & Package

SN74ALVCH162820DGG is housed in a 56-pin Thin Shrink Small-Outline (DGG) package with 0.5-mm lead pitch and exposed thermal pad. Pin numbering follows standard top-view orientation with NC (no internal connection) pins clearly designated.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit dual-output latch applications.

Compared with SN74ALVCH162830DGG and SN74LVC16373ADGGR, the SN74ALVCH162820DGG uniquely combines edge-triggered operation, dual Q outputs per bit, bus-hold, and wide V_CC range - making it optimal for high-reliability, multi-voltage synchronous latching where signal integrity and input robustness are design-critical.

Availability

SN74ALVCH162820DGG is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, and memory interface subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SN74ALVCH162820DGG 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 logic solutions, with decades of expertise in high-reliability interface and timing products.

The SN74ALVCH162820DGG belongs to TI's Widebus™ family of advanced bus-interface logic, engineered specifically for high-speed, low-noise, multi-bit data latching in industrial, communications, and computing infrastructure.

FAQ

What is the maximum clock frequency supported by the SN74ALVCH162820DGG?

The SN74ALVCH162820DGG supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), as specified in the timing requirements table. This rating applies under recommended operating conditions including V_CC = 3.3 V ± 0.3 V and T_A = –40°C to 85°C. The SN74ALVCH162820DGG achieves this performance using TI's EPIC™ submicron CMOS process and optimized internal routing.

Does the SN74ALVCH162820DGG require external pull-up or pull-down resistors on its data inputs?

No, the SN74ALVCH162820DGG does not require external pull-up or pull-down resistors on its D1–D10 inputs due to integrated bus-hold circuitry. Each data input actively maintains its last-valid logic state when floating, with hold current ranging from ±25 µA to ±75 µA depending on V_CC. This feature is confirmed in the device description and electrical characteristics tables of the SCES012G datasheet for SN74ALVCH162820DGG.

How many output pins does the SN74ALVCH162820DGG have, and what is their configuration?

The SN74ALVCH162820DGG provides 20 output pins: two true outputs (Q1 and Q2) for each of its 10 flip-flops. All outputs are 3-state capable and controlled collectively by the two active-low output-enable inputs (1OE and 2OE). This dual-output architecture is explicitly defined in the logic diagram, pinout diagram, and functional description of the SN74ALVCH162820DGG datasheet.

What is the purpose of the 26-Ω series resistors integrated into the SN74ALVCH162820DGG outputs?

The SN74ALVCH162820DGG integrates 26-Ω series resistors into each output driver to dampen signal reflections and reduce overshoot/undershoot on transmission lines - particularly beneficial when driving 50-Ω PCB traces or cables. This eliminates the need for external series termination resistors, simplifying layout and improving signal integrity without sacrificing drive strength (±12 mA).

Can the SN74ALVCH162820DGG be used in systems with mixed 1.8-V and 3.3-V logic domains?

Yes, the SN74ALVCH162820DGG supports operation from 1.65 V to 3.6 V, making it fully compatible with both 1.8-V and 3.3-V logic domains. Its input thresholds scale with V_CC (e.g., VIH = 0.65 × V_CC at 1.65 V), and outputs swing rail-to-rail - enabling reliable interfacing between heterogeneous voltage rails without level shifters. This behavior is verified in the recommended operating conditions and electrical characteristics sections for SN74ALVCH162820DGG.