Texas Instruments SN74LVC1G19DCKRE4

Overview

SN74LVC1G19DCKRE4 from Texas Instruments is a single 1-of-2 decoder/demultiplexer IC in SC70-6 package, operating from 1.65 V to 5.5 V V_CC, with 4 ns max propagation delay at 3.3 V, ±24 mA output drive, and I_off support for live insertion and partial-power-down mode. It routes one input address (A) to either Y0 or Y1 under active-low enable (E), used in compact digital logic routing.

For engineers reviewing the SN74LVC1G19DCKRE4 datasheet, SN74LVC1G19DCKRE4 pinout, SN74LVC1G19DCKRE4 application, or SN74LVC1G19DCKRE4 equivalent, key selection criteria include its NanoFree SC70 footprint, 5.5 V-tolerant inputs, low ICC (≤10 µA), dual-output demux function, and I_off-enabled back-drive protection in power-gated systems.

Technical Context

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

It supports mixed-voltage interfacing via 5.5 V-tolerant inputs and down-translation capability-inputs can be driven at voltages higher than V_CC without damage or level-shifting circuitry. The I_off feature disables outputs during power-off, blocking current flow between powered and unpowered sections of a board.

Key Specifications

Pinout & Package

SN74LVC1G19DCKRE4 uses the SC70-6 (DCK) package: 2.0 mm × 1.25 mm body, 0.65 mm pitch, 6-pin surface-mount outline optimized for space-constrained PCBs in portable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G19DCKR, SN74LVC1G19DCKRE4 offers identical performance with enhanced RoHS compliance; versus 74LVC1G19GW,125, it delivers tighter timing control and guaranteed TI I_off specification - critical for industrial and medical portable equipment.

Availability

SN74LVC1G19DCKRE4 is available at Aetrix Electronics and suitable for AV receivers, audio docks, Blu-ray players, and personal digital assistants requiring stable component supply, long-lifecycle support, and verified RoHS-compliant packaging.

Supply support for SN74LVC1G19DCKRE4 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.

SN74LVC1G19DCKRE4 belongs to TI's LVC logic family - designed for low-voltage, high-speed, mixed-signal interface applications in space-constrained portable electronics where power efficiency and signal integrity are critical.

FAQ

What is the maximum propagation delay of SN74LVC1G19DCKRE4 at 3.3 V?

The maximum propagation delay (t_pd) of SN74LVC1G19DCKRE4 is 4 ns at V_CC = 3.3 V with C_L = 15 pF, as specified in the TI datasheet SCES464G. This value applies to transitions at both A→Y and E→Y paths and ensures deterministic timing in high-speed digital control loops. SN74LVC1G19DCKRE4 maintains this performance across –40°C to 85°C ambient temperature.

Does SN74LVC1G19DCKRE4 support 5 V input signals while operating at 3.3 V V_CC?

Yes, SN74LVC1G19DCKRE4 supports input voltages up to 5.5 V regardless of V_CC level - including when V_CC = 3.3 V. This overvoltage tolerance eliminates external level-shifting circuitry when interfacing with 5 V microcontrollers or legacy peripherals. SN74LVC1G19DCKRE4 achieves this via robust input clamp structures validated per JEDEC ESD standards.

How does the I_off feature work in SN74LVC1G19DCKRE4?

The I_off circuitry in SN74LVC1G19DCKRE4 disables all outputs when V_CC = 0 V, limiting leakage current to ±10 µA and preventing damaging back-current flow from powered sections into the unpowered IC. This enables safe live insertion, partial-power-down operation, and back-drive protection - essential in modular AV receivers and SSD controller boards. SN74LVC1G19DCKRE4 guarantees this behavior across full temperature range.

What package type is used for SN74LVC1G19DCKRE4?

SN74LVC1G19DCKRE4 uses the SC70-6 (DCK) package: a 2.0 mm × 1.25 mm surface-mount outline with 0.65 mm pin pitch and NanoFree™ die-as-package construction. This ultra-compact footprint reduces board area by >30% versus SOT-23 alternatives, making SN74LVC1G19DCKRE4 ideal for thin-profile consumer devices like wireless headsets and enterprise tablets.

Can SN74LVC1G19DCKRE4 drive multiple CMOS inputs simultaneously?

Yes, SN74LVC1G19DCKRE4 can drive multiple standard CMOS loads: its ±24 mA output drive at 3.3 V supports fanout to ≥10 74LVC inputs (assuming 2.4 mA per load). However, total output current per pin must stay within ±50 mA, and cumulative device current must not exceed ±100 mA. SN74LVC1G19DCKRE4 includes controlled edge rates to minimize ringing when driving light capacitive loads.