Nexperia USA Inc. 74LV595DB,112

Overview

74LV595DB,112 from Nexperia is an 8-bit serial-in/parallel-out or serial-out shift register with separate shift and storage register clocks, 3-state parallel outputs, asynchronous master reset (MR), and serial output (Q7S) for daisy-chaining. It operates from 1.0 V to 3.6 V, supports -40 °C to +125 °C, and is used in LED matrix drivers, I/O expansion for microcontrollers, and serial-to-parallel data conversion in industrial control panels.

For engineers reviewing the 74LV595DB,112 datasheet, 74LV595DB,112 pinout, 74LV595DB,112 application, or 74LV595DB,112 equivalent, key selection criteria include its dual-clock architecture (SHCP/STCP), 3-state output enable (OE) timing, guaranteed operation down to 1.0 V supply, and SO16 package compatibility with legacy PCB footprints.

Technical Context

The device implements two independent synchronous registers: an 8-stage shift register clocked by SHCP (LOW-to-HIGH edge) and an 8-bit storage latch clocked by STCP (LOW-to-HIGH edge). Data shifts serially via DS and exits via Q7S; concurrent transfer to parallel outputs occurs only on STCP edges.

MR asynchronously clears the shift register (not storage register), while OE independently controls high-impedance state of all eight Q0–Q7 outputs without affecting internal register states. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

74LV595DB,112 is supplied in SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit serial-in/parallel-out shift register applications.

Compared with SN74LV595AQPWRQ1, the 74LV595DB,112 offers lower system cost and broader voltage flexibility but lacks automotive qualification; versus 74HC595N,652, it delivers superior low-voltage performance and integrated voltage-tolerant inputs at the expense of 5 V-only compatibility.

Availability

74LV595DB,112 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller I/O expansion, industrial serial buffering, and remote control holding registers requiring stable component supply across automotive, industrial, and consumer product lifecycles.

Supply support for 74LV595DB,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 delivering high-performance, reliable, and energy-efficient components for automotive, industrial, computing, and consumer markets.

The 74LV595 belongs to Nexperia's LV logic family, engineered for low-voltage operation (1.0–3.6 V) and high noise immunity in space-constrained, thermally demanding applications such as motor control modules and portable instrumentation.

FAQ

Can 74LV595DB,112 operate reliably at 1.2 V supply?

Yes. The device is fully specified from 1.0 V to 3.6 V, with guaranteed functionality including propagation delays, output drive, and input thresholds at 1.2 V. At this voltage, maximum clock frequency is 500 ns/V (2 MHz minimum), and VOH exceeds 0.9 V with 100 µA load - sufficient for interfacing with other 1.2 V logic families.

What happens to Q0–Q7 outputs when OE is HIGH and MR is pulsed LOW?

When OE is HIGH, all Q0–Q7 outputs enter high-impedance (Z) state regardless of MR activity. Pulsing MR LOW clears only the shift register; the storage register contents and output states remain unchanged. Outputs stay in Z-state until OE returns LOW, at which point previously latched data appears immediately.

Is cascading multiple 74LV595DB,112 devices supported in hardware?

Yes. The Q7S serial output connects directly to the DS input of the next device. With SHCP and STCP shared across all devices, a single clock pair shifts data through the chain and latches it simultaneously. The 15 ns SHCP→Q7S delay at 3.3 V ensures setup time is met for up to 67 cascaded stages at 20 MHz.

Does the 74LV595DB,112 require external pull-up resistors on OE or MR?

No. OE and MR are active-LOW inputs with internal weak pull-downs (IIL ≤ 1 µA at VCC = 3.6 V), but external pull-downs are recommended for noise immunity in electrically noisy environments. For OE, a 10 kΩ resistor to GND ensures defined LOW state at power-up; for MR, the same value guarantees shift register reset during cold start.