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Texas Instruments CD74AC74M96E4
- Part No.:
- CD74AC74M96E4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74AC74M96E4.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,328
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Product details
Overview
CD74AC74M96E4 from Texas Instruments is a dual positive-edge-triggered D-type flip-flop with independent asynchronous clear and preset inputs per channel, operating across 1.5 V to 5.5 V supply range, delivering ±24 mA output drive, balanced propagation delays, and SCR-latchup-resistant CMOS process - used in digital clock domain synchronization, state machine control, and data edge alignment in industrial logic systems.
For engineers reviewing the CD74AC74M96E4 datasheet, CD74AC74M96E4 pinout, CD74AC74M96E4 application, or CD74AC74M96E4 equivalent, key selection criteria include its dual-channel edge-triggered behavior, 125 MHz max clock frequency at 5 V, 14-pin SOIC package, -55°C to 125°C temperature rating, and compatibility with mixed-voltage logic interfacing in embedded control and instrumentation designs.
Technical Context
The CD74AC74M96E4 implements two independent D-type flip-flops sharing no internal coupling; each responds solely to its dedicated CLK, D, PRE, and CLR signals. Its positive-edge clock triggering is voltage-level–based-not dependent on rise time-and supports asynchronous active-low preset and clear with priority over clocked data transfer.
It features balanced tPLH/tPHL propagation delays (e.g., 2.6 ns/9.1 ns at 5 V), low input capacitance (10 pF), and power dissipation capacitance of 55 pF. The device maintains functional integrity under wide VCC (1.5–5.5 V) and temperature (-55°C to 125°C), with ESD robustness rated at ±2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5 V to 5.5 V - enables direct interface with 1.8 V, 3.3 V, and 5 V logic families without level shifters |
| Max Clock Frequency | 125 MHz at VCC = 5 V - supports high-speed state sequencing in real-time control loops |
| Output Drive Current | ±24 mA - drives up to 15 F-series TTL loads or directly interfaces with standard CMOS inputs |
| Propagation Delay | 2.5 ns (tPLH) to 9.1 ns (tPHL) at 5 V - ensures tight timing margins in synchronous pipeline stages |
| Operating Temperature | −55°C to +125°C - qualified for extended-temperature industrial, automotive under-hood, and aerospace applications |
| Input Capacitance | 10 pF - minimizes capacitive loading on preceding drivers and preserves signal integrity in dense PCB layouts |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 requirements for handling robustness in manufacturing and field service |
Pinout & Package
CD74AC74M96E4 is packaged in a 14-pin SOIC (D package), body size 8.65 mm × 3.9 mm, with 1.27 mm pitch, RoHS-compliant NIPDAU lead finish, and moisture sensitivity level (MSL) 1 - suitable for standard reflow assembly without dry-pack requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CLR | Channel 1 Clear Input | Asynchronous active-low reset; forces Q = L, Q̅ = H regardless of clock or data state |
| 2 1D | Channel 1 Data Input | Sampled on rising clock edge when PRE and CLR are inactive (high) |
| 3 1CLK | Channel 1 Clock Input | Positive-edge–triggered; transition detection is voltage-threshold–based, not slew-rate–dependent |
| 4 1PRE | Channel 1 Preset Input | Asynchronous active-low set; forces Q = H, Q̅ = L independently of clock |
| 5 1Q | Channel 1 True Output | Non-inverted registered output; latched value reflects 1D sampled at last valid 1CLK↑ |
| 6 1Q̅ | Channel 1 Complement Output | Inverted copy of 1Q; provides both polarities for bus driving or feedback logic |
| 7 GND | Ground Reference | Primary return path for all internal logic and output currents; must be low-impedance |
| 8 2Q̅ | Channel 2 Complement Output | Independent inverted output from second flip-flop; electrically isolated from Channel 1 |
| 9 2Q | Channel 2 True Output | Independent non-inverted output; supports dual-channel parallel register operation |
| 10 2PRE | Channel 2 Preset Input | Asynchronous set for Channel 2 only; no cross-channel effect |
| 11 2CLK | Channel 2 Clock Input | Separate clock domain for Channel 2; allows independent timing control |
| 12 2D | Channel 2 Data Input | Independent data path; no shared resources with Channel 1 |
| 13 2CLR | Channel 2 Clear Input | Asynchronous reset for Channel 2 only; enables selective channel initialization |
| 14 VCC | Positive Supply | Single-supply rail powering both channels; bypass capacitor required near pin for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Wide-Voltage Operation | 1.5 V to 5.5 V supply range enables interoperability across legacy 5 V and modern low-voltage microcontroller I/O domains |
| Balanced Propagation Delays | tPLH and tPHL tightly matched (e.g., 2.6 ns vs. 9.1 ns at 5 V), reducing skew-induced metastability in multi-bit registers |
| High Fanout Capability | ±24 mA output drive supports fanout to 15 F-series TTL devices without external buffers, simplifying board-level logic expansion |
| SCR-Latchup Immunity | CMOS process and circuit design prevent destructive latchup under transient overvoltage or ESD stress, enhancing system reliability |
| Asynchronous Control Per Channel | Dedicated PRE/CLR inputs per flip-flop allow independent initialization or reset without affecting the other channel's state |
Applications
| Industrial PLC Timing Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Synchronizing sensor sampling intervals and actuator enable pulses within programmable logic controllers using deterministic clock edges. IC Role / Device Role / Timing Role: Dual-channel register holding control state bits; PRE/CLR used for safe startup initialization and fault recovery. Use Value: 125 MHz max clock rate and −55°C to 125°C rating ensure precise timing alignment across temperature extremes in factory automation environments. | Use Scenario: Managing window lift, mirror fold, and seat position memory states in distributed automotive ECUs with discrete logic. IC Role / Device Role / Timing Role: Edge-triggered storage element capturing switch transitions and debouncing via clocked sampling. Use Value: ±24 mA drive strength directly interfaces with automotive-grade optocouplers and relay drivers without buffer stages. |
| Test Equipment Pattern Generators | Medical Diagnostic Instrumentation |
Use Scenario: Generating synchronized stimulus waveforms for IC functional testing where phase-aligned bit sequences are critical. IC Role / Device Role / Timing Role: Dual DFF forming part of a shift register chain; CLK edges precisely timed to reference oscillator. Use Value: Balanced tPLH/tPHL (2.6 ns/9.1 ns) minimizes inter-bit skew in multi-stage pattern generation paths. | Use Scenario: Capturing and holding status flags from analog front-end subsystems (e.g., ADC ready, sensor fault) in portable diagnostic devices. IC Role / Device Role / Timing Role: Glitch-free state latch for safety-critical status bits; asynchronous PRE/CLR used for emergency reset. Use Value: SCR-latchup immunity and ±2000 V HBM rating meet IEC 60601-1 requirements for patient-connected equipment robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AC74DR | Same AC logic family, identical pinout, but rated only for −40°C to 85°C industrial temp range | Limited to commercial/industrial ambient environments; not suitable for extended-temperature deployments | Select when cost sensitivity outweighs extended temperature need and board space permits same SOIC-14 footprint |
| CD74HC74M96 | HC family variant: lower drive (±5.2 mA), slower max speed (60 MHz at 5 V), higher input capacitance (3.5 pF) | Lower power consumption but insufficient for high-fanout or >60 MHz timing-critical paths | Choose for battery-powered or thermally constrained applications where speed and drive are secondary to quiescent current |
Compared with SN74AC74DR, CD74AC74M96E4 offers full military-grade temperature support and higher output drive; versus CD74HC74M96, it delivers 2× clock speed and 4.6× output current - making it optimal for demanding industrial timing and control where reliability and performance intersect.
Availability
CD74AC74M96E4 is available at Aetrix Electronics and suitable for industrial PLC timing modules, automotive body control units, test equipment pattern generators, and medical diagnostic instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74AC74M96E4 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 company specializing in analog, embedded processing, and logic solutions, with leadership in high-reliability industrial and automotive-grade components.
The CD74AC74M96E4 belongs to TI's AC-series advanced CMOS logic family, designed for high-speed, low-power, mixed-voltage digital control in harsh-environment applications including factory automation, transportation systems, and precision instrumentation.
FAQ
What is the maximum clock frequency supported by CD74AC74M96E4?
The CD74AC74M96E4 supports a maximum clock frequency of 125 MHz when operated at VCC = 5 V ± 0.5 V and TA = −40°C to 85°C. At extended temperature (−55°C to 125°C), the guaranteed maximum is 110 MHz. These values are measured under specified load conditions (CL = 50 pF) and reflect worst-case timing across voltage and temperature corners.
Does CD74AC74M96E4 require external pull-up or pull-down resistors on unused inputs?
Yes - all unused inputs of CD74AC74M96E4 must be held at a defined logic level (VCC or GND) to prevent floating states that cause increased ICC, noise susceptibility, or unintended switching. TI explicitly recommends tying unused PRE, CLR, D, or CLK pins to VCC or GND based on functional intent, as stated in Section 4.3 and Layout Example Figure 7-1 of the datasheet.
What package type and dimensions does CD74AC74M96E4 use?
CD74AC74M96E4 uses a 14-pin SOIC (Small Outline Integrated Circuit) package designated as 'D', with nominal body dimensions of 8.65 mm × 3.9 mm, 1.27 mm lead pitch, and maximum height of 1.75 mm. It is RoHS-compliant with NIPDAU lead finish and MSL Level-1 rating for unlimited floor life under JEDEC J-STD-020.
Can CD74AC74M96E4 operate reliably at 1.8 V supply voltage?
Yes - CD74AC74M96E4 is fully specified for operation down to 1.5 V, so 1.8 V is well within its recommended operating range. At 1.8 V, typical parameters include fMAX ≈ 25 MHz, tPLH/tPHL ≈ 35 ns, and VIH/VIL thresholds scaled proportionally (VIH ≈ 1.4 V, VIL ≈ 0.4 V), enabling direct interface with 1.8 V microcontrollers and FPGAs.
How does the asynchronous preset and clear functionality work in CD74AC74M96E4?
In CD74AC74M96E4, the PRE and CLR inputs operate asynchronously and independently per channel: a low pulse on 1PRE forces 1Q = H and 1Q̅ = L immediately, overriding clock and data; similarly, 1CLR = L forces 1Q = L and 1Q̅ = H. Both have priority over clocked operation, and their deassertion (return to high) restores normal D-to-Q transfer on subsequent clock edges - as confirmed in Table 6-1 and Section 6.3.
CD74AC74M96E4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 110 MHz
- Max Propagation Delay @ V, Max CL:
- 10ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.5V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 10 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
CD74AC74M96E4 FAQ
1.How can I place an order for CD74AC74M96E4 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74AC74M96E4 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 CD74AC74M96E4 reliable?
The price and inventory of CD74AC74M96E4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74AC74M96E4 is usually 5 days.
3.What payment methods are accepted for CD74AC74M96E4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74AC74M96E4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74AC74M96E4?
CD74AC74M96E4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74AC74M96E4 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 CD74AC74M96E4?
For technical support, including CD74AC74M96E4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74AC74M96E4 requirements.
6.How does Aetrix verify that CD74AC74M96E4 is sourced from the original manufacturer or authorized distributors?
All CD74AC74M96E4 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 CD74AC74M96E4 meets industry standards.
7.What is the process for return or replacement of CD74AC74M96E4?
All CD74AC74M96E4 units undergo pre-shipment inspection (PSI). If there is an issue with CD74AC74M96E4, 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 CD74AC74M96E4 part is unused and in its original packaging.
Return procedure for CD74AC74M96E4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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