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Texas Instruments CD74HC374M96E4
- Part No.:
- CD74HC374M96E4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74HC374M96E4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,606
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Product details
Overview
CD74HC374M96E4 from Texas Instruments is an octal D-type flip-flop with 3-state outputs, positive-edge clock triggering, and bus-driving capability. It operates from 2 V to 6 V, delivers 15 ns typical propagation delay at 5 V/15 pF, supports –55°C to +125°C temperature range, and drives up to 15 LSTTL loads - used in digital bus interface and data latching circuits in industrial control systems.
For engineers reviewing the CD74HC374M96E4 datasheet, CD74HC374M96E4 pinout, CD74HC374M96E4 application, or CD74HC374M96E4 equivalent, key selection considerations include its 3-state output enable control, HC logic family voltage flexibility, edge-triggered register behavior, thermal performance in SOIC-20 packaging, and compatibility with legacy TTL bus loads.
Technical Context
The CD74HC374M96E4 implements eight independent D-type flip-flops, each capturing input data on the LOW-to-HIGH clock transition. Its output enable (OE) pin operates independently of clocking, placing all eight outputs in high-impedance state when asserted HIGH.
This device belongs to the HC CMOS logic family and features buffered inputs, balanced propagation delay/transition times, and fanout of 15 LSTTL loads. It exhibits high noise immunity (NIL/NIL = 30% of VCC at 5 V) and consumes significantly less power than equivalent LSTTL ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), compatible with 2–6 V supply |
| Function | Octal D-type flip-flop with 3-state outputs and common OE control |
| Propagation Delay | 15 ns typical (VCC = 5 V, CL = 15 pF, TA = 25°C) - enables reliable timing in 60 MHz bus systems |
| Operating Temperature | –55°C to +125°C - qualified for extended industrial and aerospace environments |
| Output Drive | 15 LSTTL loads - sufficient for direct interfacing with legacy TTL buses without buffers |
| Input Noise Immunity | NIL = NIH = 30% of VCC at 5 V - robust against supply noise and crosstalk |
| Quiescent Current | ≤160 μA max (VCC = 6 V, –55°C to +125°C) - supports low-power standby modes |
Pinout & Package
CD74HC374M96E4 is housed in a 20-pin SOIC (DW) package with nominal dimensions 12.80 mm × 7.50 mm and standard JEDEC MO-002AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CP) | Clock input | Positive-edge triggered; controls synchronous data capture into all eight registers |
| 2–9 (D0–D7) | Data inputs | Asynchronous parallel inputs feeding respective D-type flip-flop stages |
| 10 (GND) | Ground reference | Primary return path for logic and output current; must be low-impedance |
| 11–18 (Q0–Q7) | 3-state outputs | Register outputs enabled only when OE = LOW; high-impedance when OE = HIGH |
| 19 (OE) | Output enable | Active-LOW control; independent of clock, enabling shared bus arbitration |
| 20 (VCC) | Supply voltage | Supports 2–6 V operation; requires local 0.1-μF bypass capacitor per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Common 3-state output enable | Single OE pin controls all eight outputs simultaneously - simplifies bus arbitration logic |
| Bus line driving capability | Rated for 15 LSTTL loads - eliminates need for external bus transceivers in mixed-logic systems |
| Wide supply voltage range | 2 V to 6 V operation - supports interoperability across 3.3 V and 5 V domains without level shifters |
| High noise immunity | 30% VCC noise margin at 5 V - ensures stable operation in electrically noisy industrial enclosures |
| Low power consumption | ≤160 μA max ICC over full temperature range - reduces thermal load in dense PCB layouts |
Applications
| Industrial PLC I/O Modules | Digital Test Equipment Bus Interface |
|---|---|
Use Scenario: Latching sensor input states and driving actuator command lines in programmable logic controllers. IC Role / Device Role / Timing Role: Synchronous data register and bus driver - captures parallel input data on clock edge and presents it to backplane bus under OE control. Use Value: Enables deterministic sampling of field signals and safe isolation of control outputs via 3-state bus contention management. | Use Scenario: Interfacing microcontroller-based test sequencers with legacy TTL instrumentation buses. IC Role / Device Role / Timing Role: Level-shifting and bus-driving latch - translates 3.3 V/5 V logic levels while sourcing/sinking 15 LSTTL loads. Use Value: Eliminates discrete buffer arrays and reduces BOM count while maintaining signal integrity at 60 MHz maximum clock rate. |
| Avionics Data Acquisition Systems | Automated Manufacturing Controllers |
Use Scenario: Capturing analog-to-digital converter outputs in radiation-tolerant flight data recorders. IC Role / Device Role / Timing Role: Radiation-hardened-capable data latch - stores sampled values synchronously and holds them stable during processor read cycles. Use Value: Wide –55°C to +125°C operating range and low ICC support uncooled operation in sealed avionics enclosures. | Use Scenario: Controlling stepper motor drivers and solenoid banks in CNC machine tool controllers. IC Role / Device Role / Timing Role: Output staging register - isolates microcontroller GPIO from inductive load switching transients using 3-state outputs. Use Value: Prevents bus contention during fault conditions and allows hot-swap reconfiguration of I/O modules without system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC574M96 | Identical function and electrical specs; differs only in pinout (Q0–Q7 and D0–D7 swapped) | Requires PCB layout revision due to non-interchangeable pin mapping | Select when existing design uses 574 pinout or needs identical footprint reuse |
| SN74HC374N | Same logic function but in PDIP-20 package; slightly higher RθJA (84.6°C/W vs 109.1°C/W) | Better hand-solderability and prototyping flexibility; lower thermal efficiency in high-density assemblies | Prefer for lab validation, low-volume production, or through-hole board designs |
Compared with CD74HC574M96 and SN74HC374N, the CD74HC374M96E4 offers optimal thermal performance in surface-mount volume production, guaranteed 3-state timing margins, and TI's standard SOIC-20 tape-and-reel packaging for automated assembly.
Availability
CD74HC374M96E4 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, avionics data acquisition systems, and automated manufacturing controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC374M96E4 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with over 90 years of innovation in high-reliability logic, power, and signal chain technologies.
The CD74HC374M96E4 belongs to TI's HC-series high-speed CMOS logic family, designed specifically for robust, low-power, wide-temperature digital interfacing in industrial, aerospace, and test equipment applications.
FAQ
What is the maximum clock frequency supported by CD74HC374M96E4?
The CD74HC374M96E4 supports a maximum clock frequency of 60 MHz under recommended conditions (VCC = 5 V, CL = 15 pF). At 2 V supply, fMAX drops to 4 MHz; at 6 V, it reaches 23 MHz over the full –55°C to +125°C range. These values are specified in the Switching Characteristics table of the official TI datasheet SCHS183E.
Does CD74HC374M96E4 support 3.3 V operation?
Yes, CD74HC374M96E4 fully supports 3.3 V operation as part of its 2 V to 6 V HC logic family specification. At 3.3 V, VIH = 2.31 V (min), VIL = 1.09 V (max), and propagation delay increases to ~25 ns (typical, CL = 15 pF), maintaining full functionality and noise margin compliance.
How does the output enable (OE) pin behave on CD74HC374M96E4?
The OE pin on CD74HC374M96E4 is active-LOW: when OE = LOW, Q0–Q7 reflect registered data; when OE = HIGH, all outputs enter high-impedance state regardless of clock or input activity. This behavior is independent of register operation and enables safe multi-drop bus sharing without contention.
What is the thermal resistance (RθJA) of CD74HC374M96E4 in its SOIC-20 package?
The junction-to-ambient thermal resistance (RθJA) of CD74HC374M96E4 in the SOIC-20 (DW) package is 109.1°C/W, as specified in Section 5.3 of the TI datasheet SCHS183E. This value assumes standard JEDEC 2-layer board conditions and informs thermal design for continuous operation at maximum ambient temperatures.
Is CD74HC374M96E4 pin-compatible with CD74HC574M96?
No, CD74HC374M96E4 is not pin-compatible with CD74HC574M96. Although functionally identical, their pinouts differ: the 374 places D0–D7 on pins 2–9 and Q0–Q7 on pins 11–18, whereas the 574 swaps this arrangement. PCB layout changes are required for substitution - refer to TI's Pin Configuration diagrams in SCHS183E.
CD74HC374M96E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 60 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 6V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74HC374M96E4 FAQ
1.How can I place an order for CD74HC374M96E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC374M96E4 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 CD74HC374M96E4 reliable?
The price and inventory of CD74HC374M96E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC374M96E4 is usually 5 days.
3.What payment methods are accepted for CD74HC374M96E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC374M96E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC374M96E4?
CD74HC374M96E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC374M96E4 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 CD74HC374M96E4?
For technical support, including CD74HC374M96E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC374M96E4 requirements.
6.How does Aetrix verify that CD74HC374M96E4 is sourced from the original manufacturer or authorized distributors?
All CD74HC374M96E4 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 CD74HC374M96E4 meets industry standards.
7.What is the process for return or replacement of CD74HC374M96E4?
All CD74HC374M96E4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC374M96E4, 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 CD74HC374M96E4 part is unused and in its original packaging.
Return procedure for CD74HC374M96E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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