Diodes Incorporated 74HC595S16-13

Overview

74HC595S16-13 from Diodes Incorporated is an 8-bit serial-in, parallel-out shift register with storage register and 3-state outputs, operating across 2.0–6.0 V supply. It features independent shift (SHCP) and storage (STCP) clocks, master reset (MR), output enable (OE), and Q7S serial cascade output. Designed for microcontroller GPIO expansion in embedded control systems, it supports daisy-chained configurations driving LEDs, relays, or digit displays.

For engineers reviewing the 74HC595S16-13 datasheet, 74HC595S16-13 pinout, 74HC595S16-13 application, or 74HC595S16-13 equivalent, key selection criteria include propagation delay (≤48 ns @ 4.5 V), output drive strength (±35 mA per Qn), 3-state output control timing, and SO-16 package compatibility with standard PCB footprints.

Technical Context

The device implements two synchronized but independent 8-bit registers: a serial shift register accepting data on DS at each SHCP rising edge, and a parallel storage register loaded via STCP rising edge. MR asynchronously clears the shift register only; STCP transfers data without affecting shift register state.

All inputs feature Schmitt-trigger action for noise immunity, and outputs switch on falling edge while capturing on rising edge. When SHCP and STCP are tied, the shift register leads the storage register by exactly one clock cycle - enabling continuous streaming with zero-gap latching.

Key Specifications

Pinout & Package

74HC595S16-13 is housed in a 16-pin SOIC (SO-16) package with 1.27 mm pitch, JEDEC MS-012 compliant, suitable for reflow soldering and automated assembly. Body dimensions: 10.0 × 6.1 × 1.26 mm (L×W×H).

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 SN74HC595N and 74HCT595PW, the 74HC595S16-13 offers superior low-power performance and higher speed at 4.5–6.0 V, while maintaining full functional equivalence - making it optimal for modern energy-conscious and high-throughput embedded designs.

Availability

74HC595S16-13 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller GPIO expansion, industrial relay control, and digital panel meter interfaces requiring stable component supply and long-term manufacturability.

Supply support for 74HC595S16-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The 74HC595 belongs to Diodes' high-speed CMOS logic family, engineered for reliable serial-to-parallel conversion in cost-sensitive, space-constrained embedded systems - emphasizing low power, noise immunity, and broad supply voltage tolerance.

FAQ

Can 74HC595S16-13 operate reliably at 2.0 V supply?

Yes. The device is fully specified down to 2.0 V: VIH minimum is 1.5 V, VOL maximum is 0.1 V, and fMAX reaches 9 MHz at 2.0 V. This enables direct integration with 2.0–2.5 V IoT sensor nodes and low-power microcontrollers without voltage translation.

What happens to Q0–Q7 outputs during MR assertion?

MR only resets the internal shift register to zero; the storage register and thus Q0–Q7 outputs remain unchanged until the next STCP pulse. This allows safe initialization of serial data flow without disrupting currently displayed or driven states.

Is Q7S output inverted relative to Q7?

No. Q7S is the true, non-inverted serial output of the shift register's most significant bit - identical in logic level to Q7 at the moment it shifts out. It is not a complemented signal and matches Q7's value one SHCP cycle after Q7 appears on its pin.

How does output enable (OE) interact with the storage register?

OE controls only the 3-state buffer between the storage register and Q0–Q7 pins. When OE is high, outputs go high-impedance regardless of storage register content; the stored data remains intact and is immediately visible on Q0–Q7 when OE returns low.