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Nexperia USA Inc. 74HCT4094D,118
- Part No.:
- 74HCT4094D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Shift Registers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT4094D,118.pdf
- Description:
- IC 8STAGE SHIFT/STORE BUS 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:768
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Product details
Overview
74HCT4094D,118 from Nexperia is an 8-bit serial-in/parallel-out shift-and-store bus register with separate shift and storage clocks, 3-state outputs, dual serial outputs (QS1/QS2) for daisy-chaining, and TTL-compatible inputs. It operates from 4.5 V to 5.5 V across –40 °C to +125 °C and is used in LED matrix drivers and remote control holding registers where cascaded data distribution and output latching are required.
For engineers reviewing the 74HCT4094D,118 datasheet, 74HCT4094D,118 pinout, 74HCT4094D,118 application, or 74HCT4094D,118 equivalent, this device supports high-speed serial-to-parallel conversion with precise strobe-controlled output latching, low propagation delay (25 ns typical CP→QPn at 4.5 V), and robust 3-state output enable timing.
Technical Context
The device implements two synchronized but independent 8-bit shift registers: a serial-shift register clocked on CP rising edges, and a parallel-storage register loaded on STR high. Data propagates through QS1 on the same CP edge and QS2 on the subsequent CP falling edge-enabling flexible cascade timing for both fast and slow clock edges.
Its 3-state outputs are controlled solely by OE (active-high), with no effect on internal register states. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, and TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) ensure compatibility with legacy logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds, CMOS output drive, enabling mixed-voltage system interfacing |
| Supply Voltage Range | 4.5 V to 5.5 V - Ensures stable operation across industrial-grade 5 V rails with ±5% tolerance |
| Propagation Delay (CP → QPn) | 25 ns typical at VCC = 4.5 V - Supports >20 MHz serial clock rates in cascaded configurations |
| Operating Temperature | –40 °C to +125 °C - Qualified for under-hood automotive and industrial control environments |
| Output Drive | ±4.0 mA at VOH/VOL - Sufficient to directly drive LEDs or standard CMOS/TTL loads without buffering |
| Power Dissipation | 83 pF CPD - Enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal design |
| ESD Rating | HBM >2000 V, CDM >1000 V - Robust handling during PCB assembly and field service |
Pinout & Package
74HCT4094D,118 is supplied in SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - STR | Strobe input | Transfers data from shift register to storage register on HIGH; enables synchronized parallel output update |
| 2 - D | Serial data input | Accepts new bit on each LOW-to-HIGH CP transition; feeds first stage of 8-bit shift register |
| 3 - CP | Shift clock input | Drives serial shifting on rising edge; QS1 reflects stage-6 output, QS2 reflects stage-7 output |
| 4–7, 11–14 - QP0–QP7 | Parallel outputs | 8-bit latched data outputs; high-impedance when OE = LOW; driven from storage register only |
| 8 - GND | Ground reference | Primary return path for all internal logic and output currents; must be low-impedance |
| 9, 10 - QS1, QS2 | Serial outputs | QS1 provides stage-6 data on CP↑; QS2 provides stage-7 data on CP↓ - enables seamless multi-device chaining |
| 15 - OE | Output enable | Active-HIGH control of 3-state outputs; no impact on internal register states or shift operation |
| 16 - VCC | Supply voltage | 5 V nominal supply; powers all logic and output stages; decoupling capacitor required at pin |
Key Features
| Feature | Design Value |
|---|---|
| Dual serial outputs (QS1/QS2) | Enables reliable daisy-chaining across multiple devices regardless of clock edge slew rate |
| Separate shift and store clocks | Decouples serial loading (CP) from parallel output update (STR), eliminating race conditions in real-time systems |
| TTL-compatible inputs | VIH = 2.0 V min / VIL = 0.8 V max at 5 V allows direct interface with legacy microcontrollers and logic |
| 3-state parallel outputs | OE-controlled high-impedance state permits shared bus architectures and eliminates external bus buffers |
| Industrial temperature range | –40 °C to +125 °C qualification ensures reliability in motor drives, HVAC controls, and factory automation |
Applications
| LED Matrix Driver | Remote Control Decoder |
|---|---|
|
Use Scenario: Driving 8×8 monochrome LED displays using microcontroller GPIO-constrained serial interfaces. IC Role / Device Role / Timing Role: Serial-to-parallel converter and output latch; accepts SPI-like bitstream, stores data, and presents it simultaneously on QP0–QP7. Use Value: Reduces MCU pin count by 8 while maintaining flicker-free display refresh via STR-synchronized output updates. |
Use Scenario: Holding decoded IR command bits in consumer electronics remotes before CPU polling. IC Role / Device Role / Timing Role: Remote control holding register; captures serial IR data stream and holds stable parallel output until read. Use Value: Eliminates need for continuous CPU monitoring; enables low-power sleep modes between command reads. |
| Industrial I/O Expander | Programmable Logic Interface |
|
Use Scenario: Adding isolated digital outputs to PLC modules via daisy-chained shift registers. IC Role / Device Role / Timing Role: Cascadable bus register; QS1/QS2 propagate data across multiple units; STR aligns output updates across entire chain. Use Value: Enables scalable expansion up to 64+ outputs using only 3 MCU pins (CP, D, STR) and one global OE line. |
Use Scenario: Configuring signal routing in FPGA/CPLD development boards with user-defined pin mappings. IC Role / Device Role / Timing Role: Programmable output latch; STR synchronizes configuration writes from JTAG/SPI host to avoid metastability. Use Value: Provides glitch-free reconfiguration of I/O direction and state without disrupting active logic paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit shift-and-store register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC4094D,118 | CMOS-input version; VIH = 3.15 V min at 4.5 V; higher noise margin but incompatible with 3.3 V logic without level translation | Better suited for pure 5 V CMOS systems; less tolerant of mixed-voltage interfaces | Select when interfacing exclusively with 5 V HC/HCT logic and maximum noise immunity is required |
| SN74LV4094APWR | Lower VCC range (2.0–5.5 V); LV logic family; 3.3 V optimized; propagation delay ~30 ns at 3.3 V | Preferred for 3.3 V embedded systems; supports single-supply operation with mixed 3.3/5 V peripherals | Choose for modern low-voltage designs requiring backward compatibility with 5 V signals and reduced power |
Compared with 74HC4094D,118 and SN74LV4094APWR, the 74HCT4094D,118 uniquely bridges legacy TTL systems and 5 V CMOS buses without level shifters, offers tighter timing control for deterministic strobe-latched outputs, and delivers superior ESD robustness for industrial deployment.
Availability
74HCT4094D,118 is available at Aetrix Electronics and suitable for LED matrix drivers, remote control holding registers, industrial I/O expanders, and programmable logic interfaces requiring stable component supply across extended temperature ranges.
Supply support for 74HCT4094D,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with core expertise in automotive-qualified and industrial-grade standard logic families.
The 74HCT series is designed specifically for robust 5 V system interfacing, combining TTL input compatibility with CMOS output performance and extended temperature resilience for demanding embedded applications.
FAQ
What is the difference between QS1 and QS2 outputs?
QS1 outputs the data from shift register stage 6 on the same LOW-to-HIGH CP transition that shifts data into stage 7. QS2 outputs the data from stage 7 on the subsequent HIGH-to-LOW CP transition. This dual-output timing allows reliable cascading with either fast or slow clock edges - QS1 for edge-aligned chaining, QS2 for setup-margin–tolerant chaining.
Can 74HCT4094D,118 operate at 3.3 V supply?
No - the 74HCT4094D,118 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be reliably met, and output drive strength degrades significantly. For 3.3 V systems, use the pin-compatible SN74LV4094APWR or 74LVC4094PW, which are fully characterized down to 2.0 V.
How does the strobe (STR) input interact with ongoing shift operations?
STR is asynchronous and independent of CP: a HIGH pulse on STR transfers the current contents of the shift register into the storage register *immediately*, regardless of CP state. Shift operations continue uninterrupted - STR only affects output latching, not serial data flow or internal shift register integrity.
Is output enable (OE) affected by power-up sequencing?
Yes - OE is not internally pulled up or down. If left floating during power-up, outputs may enter undefined or partially enabled states. Always tie OE to GND (outputs disabled) or VCC (outputs enabled) via a pull-down or pull-up resistor (≤10 kΩ) to ensure deterministic behavior at power-on and during brownout conditions.
74HCT4094D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Shift Register
- Output Type:
- Tri-State
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Function:
- Serial to Parallel, Serial
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HCT4094D,118 FAQ
1.How can I place an order for 74HCT4094D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT4094D,118 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 74HCT4094D,118 reliable?
The price and inventory of 74HCT4094D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4094D,118 is usually 5 days.
3.What payment methods are accepted for 74HCT4094D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4094D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT4094D,118?
74HCT4094D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT4094D,118 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 74HCT4094D,118?
For technical support, including 74HCT4094D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4094D,118 requirements.
6.How does Aetrix verify that 74HCT4094D,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT4094D,118 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 74HCT4094D,118 meets industry standards.
7.What is the process for return or replacement of 74HCT4094D,118?
All 74HCT4094D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4094D,118, 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 74HCT4094D,118 part is unused and in its original packaging.
Return procedure for 74HCT4094D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT4094D,118 Tags
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Texas Instruments
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74HC165D,653
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SN74LV165APWR
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74HC165BQ,115
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