Nexperia USA Inc. 74LV165DB,112

Overview

74LV165DB,112 from Nexperia is an 8-bit parallel-in/serial-out shift register with asynchronous parallel load (PL), dual complementary serial outputs (Q7 and Q7), and clock enable (CE) control. It operates across 1.0 V to 5.5 V supply, supports -40 °C to +125 °C ambient range, and delivers 78 MHz max clock frequency at 3.3 V/15 pF - used in industrial I/O expansion and microcontroller GPIO offload circuits.

For engineers reviewing the 74LV165DB,112 datasheet, 74LV165DB,112 pinout, 74LV165DB,112 application, or 74LV165DB,112 equivalent, key selection criteria include parallel-load latency (20 ns min at 3.3 V), serial output skew between Q7/Q7 (<1 ns), CE-controlled clock gating behavior, and SO16 package compatibility with legacy 74-series PCB footprints.

Technical Context

The device implements a synchronous 8-stage shift register with independent asynchronous parallel load path: when PL is LOW, D0–D7 load directly into flip-flops without clock dependency; when PL is HIGH, data shifts serially on CP rising edge only if CE is LOW. The dual outputs Q7 (true) and Q7 (complement) enable differential signaling or logic-level inversion without external gates.

Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used; static input thresholds scale with VCC (VIH = 0.7×VCC, VIL = 0.3×VCC at 4.5–5.5 V), and dynamic performance is characterized across four voltage bands (1.2 V, 2.0 V, 2.7–3.6 V, 4.5–5.5 V) with propagation delays as low as 11 ns and setup/hold times down to 9 ns/5 ns.

Key Specifications

Pinout & Package

74LV165DB,112 is supplied in SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads. Pin 1 index marked by notch or dot; standard JEDEC MS-012 footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar parallel-in/serial-out shift register applications.

Compared with SN74LV165AQPWRQ1, the 74LV165DB,112 offers lower quiescent current and shorter lead time but lacks automotive certification; versus 74HC165PW,118, it enables true single-supply operation down to 1.0 V and delivers 2.2× faster propagation at 3.3 V - making it essential for battery-powered and mixed-voltage embedded systems.

Availability

74LV165DB,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, microcontroller GPIO offload, and test equipment digital pattern generation requiring stable component supply across extended temperature ranges.

Supply support for 74LV165DB,112 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LV logic family targets low-voltage, low-power digital interfacing - designed specifically for seamless integration between modern energy-efficient processors and legacy 5 V peripherals while maintaining pin and function compatibility with industry-standard 74-series devices.

FAQ

What is the minimum supply voltage for guaranteed operation of the 74LV165DB,112?

The 74LV165DB,112 is fully specified from 1.0 V to 5.5 V. At VCC = 1.0 V, it guarantees VIH ≥ 0.9 V and VIL ≤ 0.3 V, with maximum clock frequency of 115 ns propagation delay and 10 MHz fmax - validated across -40 °C to +125 °C per Table 5 and Table 7.

Can the 74LV165DB,112 be used with 5 V inputs while powered from 3.3 V?

Yes. Internal input clamp diodes allow safe interface to voltages up to 7 V when current-limiting resistors are used. At VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VIL ≤0.99 V, so 5 V TTL inputs meet threshold margins with appropriate series resistance (e.g., 1 kΩ limits IIK to <20 mA per Table 4).

How does the clock enable (CE) pin affect timing behavior?

When CE is HIGH, the CP input is disabled - no state changes occur on CP edges, and Q7/Q7 retain their last values. Propagation delay from PL or DS is unaffected. CE must transition from HIGH to LOW while CP is LOW to avoid metastability; timing is verified in Fig. 9 with th = 5 ns min at VCC = 5.0 V.

Is there a recommended decoupling strategy for high-speed operation?

Per Nexperia layout guidance, place a 100 nF X7R ceramic capacitor between VCC (pin 16) and GND (pin 8) within 5 mm of the package, plus a 10 nF capacitor adjacent to the same pins for frequencies above 20 MHz. Avoid shared power planes for VCC/GND; use dedicated 0.3 mm wide traces with ground pour clearance ≥0.2 mm.