Texas Instruments SN74LVC1G19DRYR

Overview

SN74LVC1G19DRYR from Texas Instruments is a 1-of-2 decoder/demultiplexer in a 6-pin SON package (1.45 mm × 1.0 mm), operating from 1.65 V to 5.5 V, with 4 ns max propagation delay at 3.3 V, ±24 mA output drive, and Ioff support for live insertion and partial-power-down applications. It decodes a single address bit (A) to assert either Y0 or Y1 low when enable (E) is active low - used in compact consumer audio docks and portable SSD power sequencing.

For engineers reviewing the SN74LVC1G19DRYR datasheet, SN74LVC1G19DRYR pinout, SN74LVC1G19DRYR application, or SN74LVC1G19DRYR equivalent, key selection criteria include its NanoFree™ SON footprint, 5.5 V-tolerant inputs, sub-5 ns timing at 3.3 V, Ioff-enabled back-drive protection, and compatibility with 1.8 V/2.5 V/3.3 V/5 V logic domains in space-constrained embedded systems.

Technical Context

The SN74LVC1G19DRYR implements a combinational 1-bit address decoder with active-low enable: when E = L, A selects Y0 (A = L) or Y1 (A = H) to drive low; when E = H, both outputs remain high. Its CMOS design ensures rail-to-rail output swing and balanced rise/fall times.

It features Ioff circuitry that disables outputs during power-off, blocking current flow between powered and unpowered sections - critical for hot-swap interfaces and multi-rail systems. Input tolerance up to 5.5 V allows interfacing with higher-voltage controllers while powered from lower VCC (e.g., 1.8 V).

Key Specifications

Pinout & Package

SN74LVC1G19DRYR uses a 6-pin SON (Small Outline No-Lead) package measuring 1.45 mm × 1.0 mm with wettable flanks, optimized for automated optical inspection and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-of-2 decoder/demultiplexer applications.

Compared with SN74LVC1G19DCKR and SN74LVC1G19DBVR, SN74LVC1G19DRYR delivers the smallest footprint (1.45 mm × 1.0 mm) and lowest thermal resistance among SON/SC70/SOT variants, making it optimal for ultra-dense portable electronics where board area and thermal performance are constrained.

Availability

SN74LVC1G19DRYR is available at Aetrix Electronics and suitable for audio docks, SSD power management, Blu-ray player HDMI switching, and tablet peripheral multiplexing requiring stable component supply across industrial and consumer production cycles.

Supply support for SN74LVC1G19DRYR 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 company delivering analog and embedded processing solutions, with leadership in logic, power management, and signal chain technologies.

SN74LVC1G19DRYR belongs to the LVC low-voltage CMOS logic family, designed for high-speed, low-power, mixed-voltage interfacing in portable and space-constrained electronics.

FAQ

What is the maximum propagation delay of SN74LVC1G19DRYR at 3.3 V?

The maximum propagation delay (tpd) of SN74LVC1G19DRYR is 4 ns at VCC = 3.3 V with CL = 15 pF, as specified in the switching characteristics table. This value applies to transitions at both A→Y and E→Y paths under recommended operating conditions and reflects worst-case timing for synchronous address decoding in real-time systems.

Does SN74LVC1G19DRYR support 5 V logic inputs while powered from 1.8 V?

Yes, SN74LVC1G19DRYR supports input voltages up to 5.5 V regardless of VCC, including when powered from 1.8 V. This 5.5 V-tolerant input capability allows direct interfacing with 5 V microcontrollers or sensors without external level-shifting circuitry - a key feature confirmed in the Recommended Operating Conditions table.

What is the purpose of the Ioff feature in SN74LVC1G19DRYR?

The Ioff feature in SN74LVC1G19DRYR disables output drivers when VCC = 0 V, limiting off-state leakage current to ≤10 µA. This prevents damaging back-current flow during live insertion, partial-power-down, or multi-rail system sequencing - ensuring robust operation in hot-plug and battery-backed subsystems.

Which package type does SN74LVC1G19DRYR use, and what are its dimensions?

SN74LVC1G19DRYR uses the SON (Small Outline No-Lead) package designated DRY, with nominal body dimensions of 1.45 mm × 1.0 mm and 0.5 mm pitch. This NanoFree™ package places solder terminals only on the perimeter underside, enabling high-density routing and automated optical inspection.

Can SN74LVC1G19DRYR drive standard TTL loads?

SN74LVC1G19DRYR is not designed to directly drive standard TTL loads due to its CMOS output structure and VOH/VOL specifications referenced to VCC. However, it can interface reliably with LVTTL, LVCMOS, and other 3.3 V/2.5 V/1.8 V logic families. For legacy 5 V TTL, a level-shifting buffer or resistor-based interface is required per TI application guidance.