Texas Instruments SN74AVC16722DGGR

Overview

SN74AVC16722DGGR from Texas Instruments is a 22-bit edge-triggered D-type flip-flop with 3-state outputs, Dynamic Output Control (DOC) circuitry, ±24 mA dynamic drive at 2.5 V, 1.2–3.6 V supply range, and Ioff support for partial-power-down operation. It serves as a high-speed data latch and bus interface in multi-voltage digital systems.

For engineers reviewing the SN74AVC16722DGGR datasheet, SN74AVC16722DGGR pinout, SN74AVC16722DGGR application, or SN74AVC16722DGGR equivalent, key selection criteria include 22-bit synchronous storage with clock-enable control, DOC-enabled noise-suppressed switching, mixed-voltage I/O tolerance, and TSSOP-64 packaging for space-constrained board layouts.

Technical Context

This device implements a proprietary Dynamic Output Control (DOC) architecture that dynamically modulates output impedance during signal transitions-lowering it initially for fast edge drive, then raising it to suppress ringing and crosstalk. Its 22 independent D-type flip-flops share a common CLK and CLKEN input, with asynchronous OE enabling true 3-state bus isolation without affecting internal state retention.

The SN74AVC16722DGGR operates across 1.2 V to 3.6 V VCC but is fully characterized from –40°C to 85°C for 1.65–3.6 V use. It features overvoltage-tolerant inputs/outputs (up to 4.6 V), Ioff protection to block backflow during power sequencing, and EPIC™ submicron CMOS process for low static current (40 µA typical ICC).

Key Specifications

Pinout & Package

Packaged in a 64-pin Thin Shrink Small-Outline Package (TSSOP-DGG), 12.6 mm × 6.2 mm × 1.2 mm body, JEDEC MO-153 compliant, with 0.5 mm pitch and Q1 pin-1 quadrant orientation on tape-and-reel.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 22-bit registered bus interface applications.

Compared with SN74AVC16722ZQLR and SN74LVC16374DGGR, the SN74AVC16722DGGR uniquely combines 22-bit width, DOC noise control, 1.2-V data retention, and full Ioff protection in a standard TSSOP - making it the sole option for industrial bus interfaces requiring both scalability and robust power sequencing.

Availability

SN74AVC16722DGGR is available at Aetrix Electronics and suitable for high-speed memory interfaces, multi-voltage bus isolation, industrial PLC backplanes, and test equipment signal conditioning requiring stable component supply and long-term industrial lifecycle support.

Supply support for SN74AVC16722DGGR 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 innovation in high-speed interface and low-power logic families.

The SN74AVC16722DGGR belongs to TI's AVC (Advanced Very-Low-Voltage CMOS) logic family, designed specifically for noise-sensitive, mixed-voltage digital systems requiring high-speed data registration with minimal EMI and robust power sequencing behavior.

FAQ

What is the minimum VCC required for functional operation of the SN74AVC16722DGGR?

The SN74AVC16722DGGR operates functionally from 1.4 V to 3.6 V VCC per recommended conditions. At 1.2 V, it retains stored data but does not support clocked operation. This dual-mode behavior enables graceful degradation during brownout events while preserving register contents - a key feature for fault-tolerant industrial controllers using the SN74AVC16722DGGR.

Does the SN74AVC16722DGGR support true bidirectional data flow?

No, the SN74AVC16722DGGR is a unidirectional 22-bit D-type flip-flop with separate D inputs and Q outputs. It does not implement internal direction control or bus transceiver logic. However, its 3-state outputs and Ioff capability allow it to be used in bidirectional bus architectures when paired with complementary devices - a configuration validated in TI application report SCEA006 for the AVC family, including the SN74AVC16722DGGR.

How does the Dynamic Output Control (DOC) circuit in the SN74AVC16722DGGR reduce noise without sacrificing speed?

The DOC circuit in the SN74AVC16722DGGR lowers output impedance at the start of a transition to deliver peak current for fast edge rates, then raises impedance mid-transition to damp ringing and suppress crosstalk. As confirmed in Figure 1 of the SCES166H datasheet, this results in VOH/VOL curves matching ±24 mA drive strength at 2.5 V while maintaining 2.6 ns propagation delay at 3.3 V - proving noise reduction occurs without speed degradation in the SN74AVC16722DGGR.

Can the SN74AVC16722DGGR be used in systems with 5-V logic domains?

While the SN74AVC16722DGGR inputs and outputs tolerate up to 4.6 V (per absolute maximum ratings), it cannot safely interface with sustained 5-V signals. Its VCC must remain ≤3.6 V, and any 5-V source must be clamped or attenuated to ≤4.6 V. TI explicitly specifies –0.5 V to 4.6 V as the safe input/output voltage range for the SN74AVC16722DGGR - exceeding this risks permanent damage even if VCC is within range.

What is the purpose of the CLKEN pin on the SN74AVC16722DGGR?

The CLKEN (clock enable) pin on the SN74AVC16722DGGR is an active-low control that gates the clock signal: when CLKEN is low, CLK edges trigger data capture into the 22 flip-flops; when CLKEN is high, the clock is blocked and stored data remains unchanged. This enables selective updating of subsets of registers without requiring additional clock domain management - a capability documented in the function table and logic diagram of the SN74AVC16722DGGR datasheet.