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Home > Products > Integrated Circuits (ICs) > Logic > Shift Registers

Diodes Incorporated 74AHCT164S14-13

Name: 74AHCT164S14-13
Brand: Diodes Incorporated
SKU: 74AHCT164S14-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHCT164S14-13

Manufacturer:: Diodes Incorporated

Category:: Shift Registers

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: 74AHCT164S14-13.pdf

Description:: LOGIC AHCT STD SO-14

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74AHCT164S14-13 from Diodes Incorporated is an 8-bit serial-in, parallel-out edge-triggered shift register with TTL-compatible inputs, asynchronous master reset (MR), dual ANDed serial data inputs (DSA/DSB), and positive-edge clock (CP). It operates from 4.5V to 5.5V, delivers 8mA output drive at V_CC = 4.5V, and supports up to 125MHz clock frequency with 15pF load. Used in PC peripheral interfaces for data serialization between microcontrollers and LED arrays or display drivers.

For engineers reviewing the 74AHCT164S14-13 datasheet, 74AHCT164S14-13 pinout, 74AHCT164S14-13 application, or 74AHCT164S14-13 equivalent, key selection criteria include asynchronous reset timing (t_rec = 2.5ns), setup/hold requirements (t_SU = 4.5ns, t_H = 2.0ns), output drive capability (V_OH ≥ 3.94V @ I_OH = –8mA), and SO-14 package compatibility with legacy 74-series footprints.

Technical Context

The device implements eight cascaded D-type flip-flops with synchronous serial shifting and asynchronous active-low reset. Data enters Q0 on the rising edge of CP only when DSA and DSB are logically ANDed - enabling flexible enable/data gating without external logic. All outputs (Q0–Q7) are buffered CMOS, supporting fan-out to standard TTL loads.

Input Schmitt triggers provide noise immunity on CP, MR, DSA, and DSB pins. ESD protection exceeds JESD22-A114 (2000V HBM), A115 (200V MM), and C101 (1000V CDM), making it suitable for industrial board-level environments with moderate electrostatic risk.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5V to 5.5V - ensures compatibility with 5V TTL and mixed-voltage systems without level-shifting.
Max Clock Frequency	125 MHz (CL = 15pF) - enables high-speed serial-to-parallel conversion in real-time control loops.
Output Drive	±8 mA at V_CC = 4.5V - directly drives LEDs or standard TTL inputs without external buffers.
Propagation Delay	3.4 ns typical (CP to Qn, CL = 15pF) - supports tight timing budgets in synchronous data pipelines.
Reset Recovery Time	2.5 ns - allows rapid reinitialization after fault conditions without clock cycle loss.
Input Thresholds	V_IH ≥ 2.0V, V_IL ≤ 0.8V - guarantees robust logic-level recognition across temperature and voltage variation.
Power Dissipation	4.0 μA typical ICC (no load) - minimizes quiescent current in battery-backed or low-power standby modes.

Pinout & Package

74AHCT164S14-13 is supplied in a 14-pin SOIC (SO-14) package with 1.27 mm pitch, JEDEC MS-012AC compliant outline, and surface-mount footprint (5.0 × 3.9 mm body, 1.73 mm max height). Pin 1 is marked by a beveled corner or dot.

Pin/Terminal	Circuit Role	Design Meaning
1 (DSA)	Serial Data Input A	One input of 2-input AND gate feeding Q0; used with DSB for gated data entry or as standalone enable.
2 (DSB)	Serial Data Input B	Second input of AND gate; tying DSB HIGH makes DSA the sole serial input path.
3 (Q0)	Stage 0 Output	First-stage parallel output; receives serial data on CP rising edge and shifts to Q1 on next edge.
8 (CP)	Clock Pulse Input	Positive-edge-triggered control signal; all internal state changes occur synchronously on rising transition.
9 (MR)	Master Reset	Asynchronous active-low reset; forces Q0–Q7 LOW independent of CP or data inputs.
14 (V_CC)	Supply Voltage	Primary power rail; must be decoupled locally with 0.1 μF ceramic capacitor near pin.
7 (GND)	Ground Reference	Return path for all internal logic and output currents; requires low-impedance PCB connection.

Key Features

Feature	Design Value
Dual ANDed Serial Inputs	Enables hardware-selectable data gating: one pin acts as enable while the other carries data, eliminating external AND gates.
Asynchronous Master Reset	Guarantees deterministic initialization within 2.5 ns of MR assertion, critical for fail-safe system recovery.
TTL-Compatible Inputs	Accepts standard 5V TTL logic levels (V_IL ≤ 0.8V, V_IH ≥ 2.0V) without interface resistors or level shifters.
Schmitt Trigger Inputs	Provides >0.8V hysteresis on CP, MR, DSA, and DSB - suppresses noise-induced false triggering in noisy industrial environments.
CMOS Low-Power Operation	Draws only 4.0 μA typical supply current at 5.5V with no load - extends battery life in portable diagnostic tools.

Applications

LED Display Driver Interface

Microcontroller GPIO Expansion

Use Scenario: Driving 8-segment LED displays or 8×8 LED matrices from a single microcontroller UART or bit-banged GPIO.

IC Role / Device Role / Timing Role: Serial-to-parallel converter that translates compact serial commands into parallel output states synchronized to CP edges.

Use Value: Reduces MCU pin count by 7 (vs. direct 8-bit parallel drive) while maintaining precise timing control via programmable CP frequency.

Use Scenario: Expanding limited GPIO resources on Cortex-M0+ or PIC16 microcontrollers for industrial sensor readout or relay control banks.

IC Role / Device Role / Timing Role: Synchronous shift register providing additional parallel output latches controlled by a shared clock and reset line.

Use Value: Enables deterministic, glitch-free output updates across all 8 bits using a single CP edge - avoids partial-state transitions during software writes.

Legacy Peripheral Data Serialization

Industrial Control Bus Interface

Use Scenario: Interfacing modern MCUs with legacy parallel-interface peripherals (e.g., older LCD controllers or printer ports) via serial backplane.

IC Role / Device Role / Timing Role: Protocol bridge converting SPI/I²C-like serial streams into parallel byte-aligned data bursts.

Use Value: Eliminates need for FPGA or dedicated ASIC by providing deterministic 8-bit parallel output with sub-10ns propagation delay.

Use Scenario: Implementing distributed I/O modules in PLC backplanes where serial configuration data is loaded into local latch registers before parallel activation.

IC Role / Device Role / Timing Role: Configuration register holding startup states for downstream drivers, initialized via daisy-chained CP/DSA lines.

Use Value: Supports hot-plug initialization via MR pulse and guaranteed Qn=0 reset state - prevents undefined outputs during module insertion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AHCT595PWR	Includes output latch (separate STCP) and 3-state outputs; no dual ANDed inputs; same V_CC range and SO-16 package.	Requires separate latch strobe for output hold; better suited for driving multiplexed displays where output isolation is needed.	Select when output latching or tri-state capability is required; avoid if minimal pin count and simple shift-only operation are priorities.
74LV164PW,118	Lower V_CC range (1.0–5.5V); higher max f_MAX (120MHz @ 3.3V); TSSOP-14 package; no Schmitt triggers on inputs.	Better for mixed-voltage 3.3V/5V systems but lacks noise immunity on CP/DSB in electrically noisy factory floors.	Select for 3.3V-centric designs with tight space constraints; avoid in high-noise industrial settings where Schmitt-triggered clocks are essential.

Compared with SN74AHCT595PWR and 74LV164PW,118, the 74AHCT164S14-13 offers superior noise immunity via Schmitt-triggered inputs, simpler control (no separate latch clock), and direct TTL compatibility - making it optimal for cost-sensitive, noise-prone 5V embedded control applications requiring deterministic reset and minimal external components.

Availability

74AHCT164S14-13 is available at Aetrix Electronics and suitable for LED display driver interfaces, microcontroller GPIO expansion, and legacy peripheral data serialization requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for 74AHCT164S14-13 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The 74AHCT logic family targets 5V systems requiring TTL compatibility, low static power, and robust noise immunity - designed specifically for industrial control, PC peripheral, and embedded interface applications where reliability under voltage and temperature variation is critical.

FAQ

Can 74AHCT164S14-13 operate reliably at 3.3V supply?

No. The 74AHCT164S14-13 is specified only for 4.5V to 5.5V operation per its Recommended Operating Conditions. At 3.3V, VIH minimum (2.0V) becomes marginal relative to V_CC, and output drive (8mA) and speed (125MHz) are not guaranteed. Use 74LV164 or 74LVC164 for 3.3V systems.

What happens if both DSA and DSB are held HIGH during CP rising edge?

When both DSA and DSB are HIGH, the internal AND gate outputs HIGH, causing logic '1' to be loaded into Q0 on the next CP rising edge. This behavior is fully defined in the Function Table and enables predictable data loading without external combinational logic.

Is the MR pin truly asynchronous, and does it override CP and data inputs?

Yes. MR is asynchronous and active-low: asserting MR LOW immediately forces Q0–Q7 to LOW regardless of CP state, DSA/DSB values, or previous register contents. Recovery requires MR to return HIGH for ≥2.5ns before the next CP edge to ensure valid operation.

Does the SO-14 package support reflow soldering per JEDEC J-STD-020?

Yes. The SO-14 package for 74AHCT164S14-13 is qualified for standard lead-free reflow profiles (peak 260°C, 10s max), matching JEDEC J-STD-020D. Thermal pad layout guidelines and recommended stencil design are provided in Diodes' AP02001 document.

74AHCT164S14-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AHCT

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Shift Register

Output Type:: Push-Pull

Number of Elements:: 1

Number of Bits per Element:: 8

Function:: Serial to Parallel

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74AHCT164S14-13 FAQ

1.How can I place an order for 74AHCT164S14-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHCT164S14-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AHCT164S14-13 reliable?

The price and inventory of 74AHCT164S14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT164S14-13 is usually 5 days.

3.What payment methods are accepted for 74AHCT164S14-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT164S14-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHCT164S14-13?

74AHCT164S14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHCT164S14-13 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AHCT164S14-13?

For technical support, including 74AHCT164S14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT164S14-13 requirements.

6.How does Aetrix verify that 74AHCT164S14-13 is sourced from the original manufacturer or authorized distributors?

All 74AHCT164S14-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHCT164S14-13 meets industry standards.

7.What is the process for return or replacement of 74AHCT164S14-13?

All 74AHCT164S14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT164S14-13, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AHCT164S14-13 part is unused and in its original packaging.

Return procedure for 74AHCT164S14-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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