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Texas Instruments CD74FCT374M96
- Part No.:
- CD74FCT374M96
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74FCT374M96.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,406
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Product details
Overview
CD74FCT374M96 from Texas Instruments is a BiCMOS octal edge-triggered D-type flip-flop with 3-state outputs, designed for bus interface and register applications. It features 48-mA sink current per output, 70-MHz maximum clock frequency, 2-ns data setup/hold times, and output voltage swing limited to 3.7 V for EMI reduction in high-speed digital systems.
For engineers reviewing the CD74FCT374M96 datasheet, CD74FCT374M96 pinout, CD74FCT374M96 application, or CD74FCT374M96 equivalent, key selection criteria include 3-state bus-driving capability, low-power BiCMOS logic compatibility with TTL/CMOS inputs, controlled output edge rates, and operation across 0°C to 70°C industrial temperature range.
Technical Context
The CD74FCT374M96 implements eight independent D-type flip-flops triggered on the low-to-high CLK transition, with asynchronous 3-state control via OE. Its BiCMOS output stage combines bipolar and CMOS transistors to limit VOH to ~3.7 V at VCC = 5 V, reducing power-bus ringing and ground bounce during simultaneous switching.
Input isolation from VCC, buffered OE and CLK inputs, and SCR latch-up-resistant process ensure robust operation in noisy environments. The device supports bidirectional bus driving without external pull-ups or interface components due to its high-sink drive and true high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | FCT BiCMOS - compatible with TTL input thresholds (VIH = 2 V, VIL = 0.8 V) and CMOS-level outputs |
| Max Clock Frequency | 70 MHz - enables high-speed register transfer in microprocessor I/O and memory buffer designs |
| Output Sink Current | 48 mA per pin - drives heavy capacitive bus loads directly without buffering |
| Propagation Delay | 6.6 ns typical (CLK to Q) - ensures timing margin in synchronous 50+ MHz systems |
| Supply Voltage Range | 4.75 V to 5.25 V - tightly regulated 5-V operation with ±5% tolerance for stable logic levels |
| Operating Temperature | 0°C to 70°C - qualified for commercial and industrial embedded control applications |
| Power Dissipation Cap. | 33 pF - low dynamic power consumption at 1 MHz, supporting energy-efficient register staging |
Pinout & Package
CD74FCT374M96 uses a 20-pin plastic small-outline (SOIC) package (M package), 7.5 mm wide, with standard JEDEC MS-013 footprint and 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low 3-state control; high = high-impedance outputs, independent of clock or register state |
| 2–9, 11–18 | 1D–8D, 1Q–8Q | Data inputs and noninverted registered outputs; each pair corresponds to one flip-flop channel |
| 10 | GND | Ground reference for all logic and output stages; decoupling required near pin |
| 19 | CLK | Clock input; edge-triggered on rising transition; buffered to reject noise and support fanout |
| 20 | VCC | 5-V supply; isolated from inputs to prevent coupling; requires local 0.1-µF ceramic bypass |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS Output Stage | Limits VOH to ~3.7 V at VCC = 5 V, suppressing power-bus ringing and EMI in dense PCB layouts |
| 48-mA Sink Capability | Drives 50-pF bus loads directly without series resistors or external drivers in backplane or motherboard designs |
| Buffered Control Inputs | OE and CLK inputs resist noise and support >10-unit fanout, enabling reliable multi-device synchronization |
| SCR Latch-Up Resistance | Qualified per JEDEC JESD78; withstands transient overvoltage events in industrial I/O environments |
| Input/Output Isolation | VCC-independent input structure prevents supply coupling into data paths during switching transients |
Applications
| Microprocessor I/O Port Expansion | Memory Address/Register Latching |
|---|---|
|
Use Scenario: Expanding GPIO count on legacy 8-bit or 16-bit microcontrollers for peripheral interfacing. IC Role / Device Role / Timing Role: Octal D-flip-flop acting as synchronized output latch, capturing parallel data on CLK edge and presenting it via 3-state outputs to shared data bus. Use Value: Eliminates need for discrete buffers or level shifters; 48-mA drive supports direct connection to 5-V TTL bus segments. |
Use Scenario: Holding address or control signals in static RAM or EPROM-based systems with multiplexed buses. IC Role / Device Role / Timing Role: Edge-triggered register storing address bits during memory access cycles, with OE enabling/disabling bus contention. Use Value: 2-ns setup/hold time ensures reliable capture from fast microcontroller address strobes; 3-state isolation prevents bus conflicts during refresh or wait states. |
| Bidirectional Data Bus Interface | Digital Test Equipment Signal Conditioning |
|
Use Scenario: Implementing half-duplex communication between two 5-V logic domains sharing a common data path. IC Role / Device Role / Timing Role: Dual-role register: latching outbound data on rising CLK while presenting high-Z on receive, controlled by direction signal tied to OE. Use Value: Noninverted outputs and independent OE allow seamless direction switching without added logic; BiCMOS drive handles mixed-load bus termination. |
Use Scenario: Capturing and holding test vectors or stimulus patterns in automated test equipment (ATE) pattern generators. IC Role / Device Role / Timing Role: Synchronized sampling node that freezes parallel digital patterns at precise trigger points for output staging. Use Value: 70-MHz clock rating supports high-speed pattern rates; low propagation delay (6.6 ns typ.) preserves timing fidelity in sub-15-ns test cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74FCT374N | Plastic DIP (E package); higher θJA (69°C/W); identical electrical specs and timing | Through-hole assembly only; less suitable for high-density surface-mount PCBs | Select when manual prototyping, socket-based testing, or legacy through-hole production is required |
| 74AC374PC | Advanced CMOS (AC) family; 50-mA sink; wider VCC range (2–6 V); no VOH limiting | Higher EMI risk in 5-V bus systems; lacks BiCMOS EMI suppression and latch-up immunity | Choose for multi-supply systems or where full rail-to-rail swing is needed, but verify EMI compliance |
Compared with SN74FCT374N and 74AC374PC, CD74FCT374M96 delivers superior EMI control via its 3.7-V VOH clamping and lower thermal resistance (58°C/W), making it preferred for compact, high-speed 5-V bus interfaces where signal integrity and reliability are critical.
Availability
CD74FCT374M96 is available at Aetrix Electronics and suitable for microprocessor I/O expansion, memory address latching, bidirectional bus interfacing, and digital test equipment requiring stable component supply and long-term industrial availability.
Supply support for CD74FCT374M96 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 specializing in analog, embedded processing, and logic solutions, with decades of experience in high-reliability industrial and automotive IC design.
The CD74FCT374M96 belongs to TI's FCT BiCMOS logic family, engineered specifically for low-noise, high-drive 5-V bus interface and register applications in commercial and industrial systems.
FAQ
What is the recommended power supply decoupling for CD74FCT374M96?
Each CD74FCT374M96 requires a 0.1-µF ceramic capacitor placed as close as possible between VCC (pin 20) and GND (pin 10). For systems with multiple devices, add a 4.7-µF tantalum or aluminum electrolytic capacitor per 5–10 units. This minimizes VCC bounce during simultaneous 48-mA output switching, a key design requirement specified in the CD74FCT374M96 datasheet to maintain output voltage stability and reduce EMI.
Does CD74FCT374M96 support hot insertion or live bus swapping?
No, CD74FCT374M96 does not support hot insertion. Its absolute maximum rating for DC input clamp current is –20 mA, and the device lacks built-in bus-hold or power-off protection circuitry. Applying signals to inputs or outputs while VCC is unpowered risks latch-up or damage. System-level hot-swap capability must be implemented externally using dedicated hot-swap controllers - a limitation explicitly documented for the CD74FCT374M96 in TI's SCBS739 datasheet.
Can CD74FCT374M96 drive a 100-pF load reliably?
CD74FCT374M96 is characterized for 50-pF loads per output in timing tests; driving 100-pF loads exceeds its validated specification. While the 48-mA sink current may sustain static conditions, propagation delay increases and edge rate degrades beyond datasheet limits. For 100-pF applications, TI recommends verifying timing margins empirically or selecting a higher-drive alternative - a constraint confirmed in the CD74FCT374M96 switching characteristics table under CL = 50 pF conditions.
What is the function of the OE pin during power-up of CD74FCT374M96?
The OE pin must be pulled high via a resistor to VCC during power-up to guarantee outputs remain in high-impedance state until system initialization completes. TI specifies a minimum pull-up resistor value based on driver sink capability; failure to do so may cause bus contention or undefined logic states. This behavior is intrinsic to the CD74FCT374M96's internal OE circuitry and is explicitly called out in the "Power-Up Considerations" section of the CD74FCT374M96 datasheet.
Is CD74FCT374M96 pin-compatible with CD74ACT374M96?
No, CD74FCT374M96 is not pin-compatible with CD74ACT374M96. Although both are 20-pin SOIC octal D-flip-flops with 3-state outputs, the ACT version uses different input threshold specifications (VIH = 3.5 V min), lacks VOH limiting, and has distinct AC timing parameters. Pin assignments match, but electrical behavior differs significantly - TI documentation treats them as functionally similar but not drop-in replacements, and the CD74FCT374M96 datasheet makes no claim of compatibility with ACT-family devices.
CD74FCT374M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 70 MHz
- Max Propagation Delay @ V, Max CL:
- 6.6ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 15mA, 48mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Iq):
- 8 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74FCT374M96 FAQ
1.How can I place an order for CD74FCT374M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74FCT374M96 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 CD74FCT374M96 reliable?
The price and inventory of CD74FCT374M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74FCT374M96 is usually 5 days.
3.What payment methods are accepted for CD74FCT374M96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74FCT374M96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74FCT374M96?
CD74FCT374M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74FCT374M96 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 CD74FCT374M96?
For technical support, including CD74FCT374M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74FCT374M96 requirements.
6.How does Aetrix verify that CD74FCT374M96 is sourced from the original manufacturer or authorized distributors?
All CD74FCT374M96 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 CD74FCT374M96 meets industry standards.
7.What is the process for return or replacement of CD74FCT374M96?
All CD74FCT374M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74FCT374M96, 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 CD74FCT374M96 part is unused and in its original packaging.
Return procedure for CD74FCT374M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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