Texas Instruments SN74AUP1G79DBVT

Overview

SN74AUP1G79DBVT from Texas Instruments is a single positive-edge-triggered D-type flip-flop in a 5-pin SOT-23 package, operating across 0.8 V to 3.6 V supply voltage, with 4 ns maximum propagation delay at 3.3 V, 0.9 µA maximum ICC, and 1.5 pF typical input capacitance. It serves as a low-power edge-sensitive data latch in portable timing and synchronization circuits.

For engineers reviewing the SN74AUP1G79DBVT datasheet, SN74AUP1G79DBVT pinout, SN74AUP1G79DBVT application, or SN74AUP1G79DBVT equivalent, key selection criteria include its Ioff partial power-down support, 250 mV typical input hysteresis for noise immunity, 3.6-V I/O tolerance for mixed-voltage interfacing, and verified performance up to 260 MHz at 3.3 V with CL = 5 pF.

Technical Context

The SN74AUP1G79DBVT implements a synchronous D-type latch triggered solely on the positive-going clock edge, with setup/hold times as low as 0.6 ns / 0 ns at 3.3 V. Its clock triggering is voltage-level–based-not dependent on input slew rate-enabling robust operation with slow or noisy clocks when combined with 250 mV input hysteresis.

It features balanced CMOS push-pull outputs capable of ±4 mA drive at 3 V, Ioff circuitry that disables I/Os during power-down to prevent backflow, and over-voltage tolerant inputs rated to 4.6 V-allowing safe interfacing with higher-voltage logic domains while powered at 0.8–3.6 V.

Key Specifications

Pinout & Package

SN74AUP1G79DBVT uses a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with standard lead pitch and thermal pad omitted.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar D-type flip-flop applications.

Compared with SN74LVC1G79DBVT and 74AHC1G79SE-7, SN74AUP1G79DBVT uniquely delivers sub-1-µA static power, 0.8-V operation, and Ioff-enabled system-level power gating-making it the only choice for battery-powered, multi-rail, or energy-harvesting applications requiring guaranteed isolation during partial power-down.

Availability

SN74AUP1G79DBVT is available at Aetrix Electronics and suitable for barcode scanners, field transmitters, and embedded PCs requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage.

Supply support for SN74AUP1G79DBVT 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 focused on analog, embedded processing, and connectivity technologies, serving industrial, automotive, and consumer markets with high-reliability components.

The AUP family-including SN74AUP1G79DBVT-is engineered for ultra-low-power portable electronics, delivering nanowatt static consumption and robust signal integrity across 0.8–3.6 V operation to maximize battery runtime.

FAQ

What is the minimum supply voltage at which SN74AUP1G79DBVT guarantees full functionality?

SN74AUP1G79DBVT is fully specified from 0.8 V to 3.6 V. At 0.8 V, it supports clock frequencies up to 20 MHz and maintains functional timing margins (tsu = 4.2 ns, tpd = 15.9 ns at TA = 25°C, CL = 5 pF). All electrical characteristics-including Ioff, hysteresis, and output drive-are validated across this full range. SN74AUP1G79DBVT remains operational below 0.8 V but without guaranteed timing or DC specs.

Does SN74AUP1G79DBVT support true bidirectional data flow or bus sharing?

No. SN74AUP1G79DBVT is a unidirectional D-type flip-flop with dedicated D (input), CLK (control), and Q (output) pins. It has no tri-state or direction-control logic. Its outputs are push-pull CMOS and must never be wired-OR'd or connected to shared buses without external isolation. SN74AUP1G79DBVT is intended for point-to-point latching-not bus interfacing.

Can SN74AUP1G79DBVT be used with a 5-V microcontroller I/O pin driving its CLK input?

Yes-provided the 5-V signal stays within absolute maximum ratings. SN74AUP1G79DBVT inputs tolerate up to 4.6 V (VI max), so a 5-V MCU output exceeds this limit and risks damage. Use a resistive divider or level translator to clamp CLK to ≤4.6 V. Alternatively, select SN74LVC1G79DBVT (5-V tolerant) if 5-V drive is mandatory. SN74AUP1G79DBVT itself does not support direct 5-V input.

How does the Ioff feature of SN74AUP1G79DBVT behave during partial power-down?

When VCC = 0 V, SN74AUP1G79DBVT places both D and Q pins in high-impedance state, limiting leakage to ≤0.6 µA per pin (TA = –40°C to 85°C). This prevents current backflow from live signal lines into the unpowered device-critical in multi-rail systems like USB-C PD adapters or modular instrumentation. Ioff is automatic; no enable/disable control is needed. SN74AUP1G79DBVT remains safe even if inputs are driven while powered down.

Is SN74AUP1G79DBVT pin-compatible with other 5-pin SOT-23 logic devices like SN74AUP1G04 or SN74AUP1G14?

No. While all share the SOT-23-5 package footprint, SN74AUP1G79DBVT has unique pin mapping: Pin 1 = D, Pin 2 = CLK, Pin 3 = GND, Pin 4 = Q, Pin 5 = VCC. In contrast, SN74AUP1G04 (inverter) assigns Pin 1 = A (input), Pin 2 = GND, Pin 3 = Y (output), Pin 4 = VCC, Pin 5 = NC. Swapping them causes incorrect connections and functional failure. Always verify pin functions-not just package-when substituting. SN74AUP1G79DBVT requires its specific pinout.