Texas Instruments SN74LVC1G374DBVR

Overview

SN74LVC1G374DBVR from Texas Instruments is a single D-type flip-flop with 3-state output, designed for 1.65-V to 5.5-V operation. It features positive-edge clock triggering, ±24-mA output drive at 3.3 V, 4 ns max propagation delay, and Ioff support for live insertion-enabling use in bidirectional bus buffering and I/O port expansion in space-constrained portable electronics.

For engineers reviewing the SN74LVC1G374DBVR datasheet, SN74LVC1G374DBVR pinout, SN74LVC1G374DBVR application, or SN74LVC1G374DBVR equivalent, key selection criteria include its SOT-23 (DBV) 6-pin package, 3.3-V/5-V mixed-voltage interface capability, low ICC (10 µA max), and guaranteed high-impedance state during power sequencing.

Technical Context

This device implements a positive-edge-triggered D flip-flop with independent 3-state output control via OE. The internal latch captures D input on CLK rising edge; OE operates asynchronously to place Q in high-Z without affecting internal state retention.

It supports voltage translation: inputs tolerate up to 5.5 V regardless of VCC (1.65–5.5 V), enabling interfacing between 1.8-V logic and 5-V peripherals. Ioff circuitry blocks current flow when powered down, satisfying partial-power-down requirements per JESD78 Class II.

Key Specifications

Pinout & Package

SOT-23 (DBV) 6-pin package: 2.9 mm × 1.6 mm × 1.45 mm body, gull-wing leads, JEDEC MO-178 compliant. RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar D-type flip-flop with 3-state output applications.

Compared with SN74LVC1G74DBVR and 74LVC1G373DBVR, SN74LVC1G374DBVR uniquely combines edge-triggered storage with 3-state output in a 6-pin SOT-23 - making it the only option among the three for synchronous bus interface applications requiring both data capture and contention-free driving.

Availability

SN74LVC1G374DBVR is available at Aetrix Electronics and suitable for USB peripheral interfaces, FPGA I/O expansion, automotive body control modules, and industrial sensor hubs requiring stable component supply and long-term production continuity.

Supply support for SN74LVC1G374DBVR 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 over 90 years of innovation in high-reliability electronic components.

The SN74LVC1G374 belongs to TI's LVC low-voltage CMOS logic family, engineered for mixed-voltage system interfacing, low-power portable electronics, and automotive-grade signal conditioning where space, power, and robustness are critical.

FAQ

What is the maximum clock frequency supported by SN74LVC1G374DBVR?

The SN74LVC1G374DBVR supports up to 175 MHz at 5 V and 150 MHz at 3.3 V under recommended operating conditions. At 1.8 V, maximum frequency drops to 125 MHz. These values assume CL = 15 pF and TA ≤ 85°C; derating applies at higher temperatures or loads.

Does SN74LVC1G374DBVR support partial power-down operation?

Yes, SN74LVC1G374DBVR includes Ioff circuitry that disables outputs and limits current to ±10 µA when VCC = 0 V, meeting JESD78 Class II latch-up immunity. This enables safe live insertion and partial-power-down in modular systems without risk of back-drive damage.

Can SN74LVC1G374DBVR interface between 1.8-V and 5-V logic domains?

Yes, SN74LVC1G374DBVR accepts input voltages up to 5.5 V regardless of VCC (1.65–5.5 V), allowing direct connection of 5-V signals to its D and OE pins while operating at 1.8 V. Its outputs swing rail-to-rail, translating to the VCC domain.

What is the recommended pull-up resistor value for OE when tied to VCC?

TI recommends tying OE to VCC through a pullup resistor with minimum value determined by the driver's current-sinking capability. For standard CMOS drivers, 10 kΩ is typical; lower values (e.g., 4.7 kΩ) improve noise immunity in noisy environments without exceeding IOL ratings.

Is SN74LVC1G374DBVR pin-compatible with other 6-pin SOT-23 logic devices?

SN74LVC1G374DBVR uses standard SOT-23 (DBV) pinout per JEDEC MO-178: CLK(1), GND(2), D(3), OE(4), Q(5), VCC(6). It shares footprint compatibility with SN74LVC1G74DBVR and 74LVC1G373DBVR, but functional differences require schematic verification before substitution.