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Home > Products > Integrated Circuits (ICs) > Logic > FIFOs Memory

NXP Semiconductors 74HC7030D,653

Name: 74HC7030D,653
Brand: NXP Semiconductors
SKU: 74HC7030D,653
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HC7030D,653

Manufacturer:: NXP Semiconductors

Category:: FIFOs Memory

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: 74HC7030D,653.pdf

Description:: IC FIFO ASYNC/SYNC 64X9 28SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74HC7030D,653 from NXP Semiconductors (formerly Philips) is a 9-bit × 64-word synchronous/asynchronous FIFO register with 3-state outputs, master-reset (MR), output enable (OE), and dual status flags (DIR/DOR). It supports up to 33 MHz shift-in/shift-out rates (typ.), operates at 2.0–6.0 V, and features ripple-through and bubble-up data movement for high-speed buffering in digital systems.

For engineers reviewing the 74HC7030D,653 datasheet, 74HC7030D,653 pinout, 74HC7030D,653 application, or 74HC7030D,653 equivalent, this device serves as a critical interface buffer where precise timing control, flag-driven handshaking, and expandable word/bit depth are required - especially in legacy video, A/D, and digital signal processing subsystems.

Technical Context

The 74HC7030D,653 implements a dual-control FIFO architecture: SI (LOW-to-HIGH edge-triggered) initiates shift-in and ripple-through, while SO (HIGH-to-LOW edge-triggered) triggers shift-out and bubble-up. DIR and DOR flags provide asynchronous status feedback independent of clock edges, enabling both flag-gated and burst-mode operation.

It supports three operational modes: flag-synchronized (≤33 MHz), high-speed burst (up to 35 MHz), and cascaded expansion (≥128-word capacity). All 9-bit parallel I/O pins are arranged opposite each other on the SOIC-28 package to minimize trace routing complexity in multi-FIFO layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Depth	64 words × 9 bits - provides deterministic latency buffering for serial-to-parallel data streams without address management logic.
Max Shift Rate (flag mode)	33 MHz (HC typ.) - enables real-time buffering of high-bandwidth digital signals such as video timebase correction or FFT output streams.
Propagation Delay (SO → Qn)	40 ns (HC, VCC = 5 V) - ensures predictable timing between shift-out command and valid output data availability.
3-State Enable/Disable Time	19–53 ns (OE → Qn) - supports clean bus sharing in multi-device systems with minimal contention window.
Supply Voltage Range	2.0 V to 6.0 V - allows direct interfacing with 3.3 V and 5 V logic families without level translation.
Input Capacitance	3.5 pF - minimizes loading on driving sources and preserves signal integrity in high-frequency clock paths.
Power Dissipation Cap.	660 pF - used to calculate dynamic power (PD = CPD × VCC² × fi + ΣCL × VCC² × fo) for thermal design in dense PCB layouts.

Pinout & Package

74HC7030D,653 is housed in a 28-pin SOIC (Small Outline Integrated Circuit) package with 300 mil body width and standard JEDEC MS-012AC outline. Pin 14 is dedicated GND; pins 1 and 2 are auxiliary GND connections - all must be connected to ground plane but must not conduct current between them.

Pin/Terminal	Circuit Role	Design Meaning
3	DIR	Data-in-ready flag output: HIGH = input stage empty and ready; LOW = full/busy - used to gate SI pulses in synchronous flow control.
4	SI	Shift-in control: LOW-to-HIGH edge loads data into input stage; HIGH-to-LOW triggers ripple-through - defines write initiation and completion timing.
5–13	D0–D8	Parallel data inputs: unweighted 9-bit bus - any pin may serve as MSB; unused pins tied to VCC/GND to reduce effective word width.
15	OE	Output enable (active LOW): controls 3-state drive of Q0–Q8 - enables shared-bus operation and reduces standby current when disabled.
16–24	Q0–Q8	3-state parallel data outputs: unweighted 9-bit bus - outputs retain last shifted word when FIFO is empty and OE = LOW.
25	DOR	Data-out-ready flag output: HIGH = valid data present at Q0–Q8; LOW = busy/empty - used to gate SO pulses in read handshaking.
26	SO	Shift-out control: HIGH-to-LOW edge shifts data out of output stage and initiates bubble-up - defines read initiation and output update timing.
27	MR	Master-reset (active LOW): clears internal control logic and invalidates data; sets DIR = HIGH and DOR = LOW - required at power-up for deterministic state.
28	VCC	Positive supply: 2.0–6.0 V - powers CMOS core and I/O buffers; decoupling capacitor mandatory near pin for noise immunity.
1, 2, 14	GND	Ground reference: three dedicated pins minimize ground bounce and improve noise margin in high-speed operation.

Key Features

Feature	Design Value
Synchronous/asynchronous operation	Supports both flag-gated (DIR/DOR monitored) and burst-mode (unconditional SI/SO pulses) transfers - eliminates need for external clock domain synchronization logic.
Cascadable architecture	Enables 128+ word depth without external gates - inter-FIFO communication handled internally via DIR/DOR flag chaining, reducing BOM count and layout area.
Pin-optimized layout	D0–D8 (pins 5–13) directly oppose Q0–Q8 (pins 16–24) - allows straight-through PCB routing in expanded FIFO arrays, cutting trace length and skew by >40%.
Expandable bit width	9-bit width can be reduced to 1–8 bits by tying unused Dn/Qn pins - supports flexible data path sizing without redesigning logic or layout.
Low dynamic power at speed	ICC = 80 mA at fmax = 18 MHz, VCC = 5 V - delivers high throughput while maintaining thermal stability in compact industrial enclosures.

Applications

High-Speed Disc/Tape Controller	Video Timebase Correction
Use Scenario: Buffering variable-rate data streams between rotating media and fixed-clock host processors to absorb mechanical jitter and rotational latency. IC Role / Device Role / Timing Role: First-In-First-Out register providing deterministic delay compensation and rate-matching between asynchronous domains. Use Value: Eliminates need for complex PLL-based resampling; 64-word depth absorbs up to 2.2 µs of timing variation at 33 MHz, preserving data integrity during seek operations.	Use Scenario: Aligning horizontal sync pulses and pixel data in analog video reconstruction circuits to correct line-length drift caused by oscillator instability. IC Role / Device Role / Timing Role: Synchronous FIFO acting as a programmable delay line that adjusts pixel pipeline latency in real time. Use Value: Enables sub-line precision correction using DIR/DOR handshaking - achieves ±1 pixel timing accuracy without FPGA-based interpolation logic.
A/D Output Buffering	Digital Filter/FFT I/O Formatter
Use Scenario: Isolating high-speed ADC output from downstream DSP processing to prevent sample loss during interrupt latency or memory access conflicts. IC Role / Device Role / Timing Role: Asynchronous interface buffer decoupling sampling clock domain from processing clock domain. Use Value: Guarantees zero-sample loss at 33 MSPS with flag-driven read/write coordination - replaces dual-port RAM + control FSM with single IC.	Use Scenario: Managing data flow between coefficient ROM, butterfly units, and output registers in pipelined FFT engines or FIR filter banks. IC Role / Device Role / Timing Role: Bit- and word-expandable FIFO providing elastic storage between computational stages with independent clocking. Use Value: Supports 18-bit word expansion (via AND-gated DIR/DOR) and 128-word cascading - matches radix-4 FFT block sizes without custom ASIC logic.

High-Speed Disc/Tape Controller

Video Timebase Correction

Use Scenario: Buffering variable-rate data streams between rotating media and fixed-clock host processors to absorb mechanical jitter and rotational latency.

IC Role / Device Role / Timing Role: First-In-First-Out register providing deterministic delay compensation and rate-matching between asynchronous domains.

Use Value: Eliminates need for complex PLL-based resampling; 64-word depth absorbs up to 2.2 µs of timing variation at 33 MHz, preserving data integrity during seek operations.

Use Scenario: Aligning horizontal sync pulses and pixel data in analog video reconstruction circuits to correct line-length drift caused by oscillator instability.

IC Role / Device Role / Timing Role: Synchronous FIFO acting as a programmable delay line that adjusts pixel pipeline latency in real time.

Use Value: Enables sub-line precision correction using DIR/DOR handshaking - achieves ±1 pixel timing accuracy without FPGA-based interpolation logic.

A/D Output Buffering

Digital Filter/FFT I/O Formatter

Use Scenario: Isolating high-speed ADC output from downstream DSP processing to prevent sample loss during interrupt latency or memory access conflicts.

IC Role / Device Role / Timing Role: Asynchronous interface buffer decoupling sampling clock domain from processing clock domain.

Use Value: Guarantees zero-sample loss at 33 MSPS with flag-driven read/write coordination - replaces dual-port RAM + control FSM with single IC.

Use Scenario: Managing data flow between coefficient ROM, butterfly units, and output registers in pipelined FFT engines or FIR filter banks.

IC Role / Device Role / Timing Role: Bit- and word-expandable FIFO providing elastic storage between computational stages with independent clocking.

Use Value: Supports 18-bit word expansion (via AND-gated DIR/DOR) and 128-word cascading - matches radix-4 FFT block sizes without custom ASIC logic.

Equivalent & Alternatives

The following parts are listed as comparable options for similar FIFO register applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74HCT7030D,653	CMOS-TTL compatible input thresholds (VIH = 2.0 V min); identical AC specs except slightly lower fmax (29 MHz vs. 33 MHz).	Required when interfacing with legacy 5 V TTL logic families without level shifters.	Select 74HCT7030D,653 only if driving circuitry uses standard TTL voltage levels; otherwise 74HC7030D,653 offers better noise margin at 3.3 V.
SN74ACT7806N	16-bit × 64-word depth; 5 V only; higher speed (fmax = 80 MHz); no DIR/DOR flags - uses separate read/write clocks and empty/full signals.	Suitable for wider data paths and higher throughput, but requires external handshaking logic for flag-equivalent behavior.	Choose SN74ACT7806N only when 16-bit width and 80 MHz burst rate are mandatory; 74HC7030D,653 remains optimal for 9-bit, flag-driven, low-complexity designs.

Compared with 74HCT7030D,653, the 74HC7030D,653 provides superior noise immunity and 3.3 V compatibility, while SN74ACT7806N trades integrated flag logic for raw bandwidth and width - making 74HC7030D,653 the most balanced choice for cost-sensitive, mixed-voltage, flag-controlled buffering.

Availability

74HC7030D,653 is available at Aetrix Electronics and suitable for high-speed disc/tape controllers, video timebase correction circuits, A/D output buffering, and digital filter I/O formatting requiring stable component supply across long-lifecycle industrial and broadcast equipment programs.

Supply support for 74HC7030D,653 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog design heritage.

The 74HC7030D,653 belongs to NXP's legacy HC logic family - engineered specifically for high-speed, low-power, pin-compatible replacement of TTL FIFOs in timing-critical digital interfaces where deterministic latency and minimal external logic are essential.

FAQ

What is the maximum operating frequency of the 74HC7030D,653 in flag-synchronized mode?

The 74HC7030D,653 supports a typical maximum shift-in/shift-out frequency of 33 MHz in flag-synchronized mode at VCC = 5 V and Tamb = 25 °C. This value drops to 29 MHz for the HCT variant and scales with supply voltage and temperature per AC characteristics tables - actual usable rate depends on DIR/DOR pulse width compliance and board-level signal integrity.

How does the 74HC7030D,653 handle full and empty conditions during data transfer?

The 74HC7030D,653 uses two dedicated status flags: DIR goes HIGH when the input stage is empty and ready to accept data, and LOW when full or busy; DOR goes HIGH when valid data is present at Q0–Q8 outputs, and LOW when empty or busy. These flags operate independently of SI/SO edges and enable robust handshaking without external counters or state machines.

Can the 74HC7030D,653 be used in 3.3 V systems?

Yes, the 74HC7030D,653 is fully specified for operation from 2.0 V to 6.0 V, including 3.3 V nominal supplies. Its HC-series CMOS inputs have rail-to-rail thresholds (VIH ≥ 70% VCC, VIL ≤ 30% VCC), ensuring reliable logic recognition and noise margin in mixed-voltage 3.3 V/5 V systems without level shifters.

What happens to output data when the 74HC7030D,653 FIFO is empty and OE is active?

When the 74HC7030D,653 FIFO is empty and OE = LOW, the Q0–Q8 outputs retain the last word that was shifted out - they do not go to high-impedance or tri-state until OE = HIGH. This latched behavior ensures stable bus values during idle periods and simplifies downstream interface design.

Is the 74HC7030D,653 pin-compatible with other members of the 74HC/HCT7030 family?

Yes, the 74HC7030D,653 shares identical pinout, package (SOIC-28), and functional mapping with all variants in the 74HC/HCT7030 family, including 74HCT7030D,653. The only differences are input threshold specifications and minor AC parameter variations - allowing direct substitution in existing designs when voltage interface requirements change.

74HC7030D,653 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74HC

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Memory Size:: 576 (64 x 9)

Function:: Asynchronous, Synchronous

Data Rate:: 33MHz

Access Time:: 36ns

Voltage - Supply:: 2 V ~ 6 V

Current - Supply (Max):: -

Bus Directional:: Uni-Directional

Expansion Type:: Depth, Width

Programmable Flags Support:: No

Retransmit Capability:: No

FWFT Support:: No

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 28-SO

74HC7030D,653 FAQ

1.How can I place an order for 74HC7030D,653 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HC7030D,653 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 74HC7030D,653 reliable?

The price and inventory of 74HC7030D,653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC7030D,653 is usually 5 days.

3.What payment methods are accepted for 74HC7030D,653?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC7030D,653 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HC7030D,653?

74HC7030D,653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HC7030D,653 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 74HC7030D,653?

For technical support, including 74HC7030D,653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC7030D,653 requirements.

6.How does Aetrix verify that 74HC7030D,653 is sourced from the original manufacturer or authorized distributors?

All 74HC7030D,653 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 74HC7030D,653 meets industry standards.

7.What is the process for return or replacement of 74HC7030D,653?

All 74HC7030D,653 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC7030D,653, 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 74HC7030D,653 part is unused and in its original packaging.

Return procedure for 74HC7030D,653:

1.Submit a request within 90 days.

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

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