Nexperia USA Inc. 74LVC595AD,118

Overview

74LVC595AD,118 from Nexperia is an 8-bit serial-in/parallel-out shift register with separate shift and storage clocks (SHCP, STCP), 3-state outputs (controlled by OE), asynchronous master reset (MR), and cascading-capable serial output (Q7S). It operates from 1.2 V to 3.6 V, tolerates 5.5 V inputs, and supports mixed-voltage interfacing between 3.3 V and 5 V systems. Used in LED matrix drivers and I/O expansion for microcontrollers.

For engineers reviewing the 74LVC595AD,118 datasheet, 74LVC595AD,118 pinout, 74LVC595AD,118 application, or 74LVC595AD,118 equivalent, this device delivers deterministic serial-to-parallel conversion with Schmitt-trigger inputs, IOFF partial power-down protection, and guaranteed timing across –40 °C to +125 °C.

Technical Context

The 74LVC595AD implements dual-register architecture: an 8-stage shift register accepting serial data on SHCP rising edges, and an independent 8-bit storage register loaded on STCP rising edges-enabling non-overlapping data latching. Its 3-state parallel outputs (Q0–Q7) are enabled only when OE is LOW; MR asynchronously clears the shift register only, leaving the storage register unaffected.

All inputs feature Schmitt-trigger action for noise immunity with slow-rising signals, and the IOFF circuit disables outputs during power-down to prevent backflow current. Input voltage tolerance up to 5.5 V allows direct connection to 5 V logic while powered from 1.65–3.6 V supplies.

Key Specifications

Pinout & Package

74LVC595AD,118 is packaged in SO16 (SOT109-1): plastic small outline, 16-pin, 3.9 mm body width, surface-mount. Pin 1 index marked; lead finish is matte tin.

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 SN74HC595PWR and 74LV595PW,118, the 74LVC595AD,118 uniquely combines 1.2 V operation, 5.5 V input tolerance, Schmitt-trigger noise immunity, and IOFF protection - making it the sole option qualified for mixed-voltage, high-reliability, and partial-power-down use cases.

Availability

74LVC595AD,118 is available at Aetrix Electronics and suitable for LED matrix drivers, MCU I/O expansion, industrial relay banks, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for 74LVC595AD,118 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 logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in mass-market electronics.

The 74LVC595A series targets space-constrained, low-power, and mixed-voltage digital interfaces - designed specifically for I/O expansion, LED driving, and industrial control where deterministic timing and fault resilience are critical.

FAQ

Can 74LVC595AD,118 operate with VCC = 1.2 V and still meet timing specifications?

Yes. The device is fully characterized down to 1.2 V: maximum propagation delay is 17.5 ns at VCC = 1.2 V (–40 °C to +85 °C), and fmax reaches 80 MHz. All static and dynamic parameters in Tables 6–7 are specified across the full 1.2 V–3.6 V range, including VIH/VIL thresholds and output drive strength.

What happens to Q0–Q7 outputs when OE is HIGH and VCC drops to 0 V?

When OE is HIGH, outputs enter high-impedance state regardless of VCC. When VCC = 0 V, the IOFF circuit activates automatically, disabling all outputs and preventing backflow current - confirmed by IOFF leakage ≤10 μA at VI/VO = 5.5 V and VCC = 0 V (Table 6).

Is cascading multiple 74LVC595AD,118 devices supported in hardware?

Yes. Q7S (pin 9) provides the serial output of the last stage and is electrically compatible with DS (pin 14) of the next device. Propagation delay from SHCP to Q7S is guaranteed ≤7.7 ns at VCC = 3.3 V, enabling reliable daisy-chaining at >100 MHz system clock rates with proper PCB layout.

Does MR reset both shift and storage registers?

No. MR (pin 10) resets only the 8-stage shift register - clearing DS input history and forcing Q7S = LOW. The storage register and Q0–Q7 outputs remain unchanged until the next STCP rising edge, preserving latched output states during reset events.