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Texas Instruments CD4027BM
- Part No.:
- CD4027BM
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD4027BM.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:456
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Product details
Overview
CD4027BM from Texas Instruments is a dual J-K flip-flop IC in SOIC-16 package, operating across 3–18 V supply, with static CMOS operation, 16 MHz typical toggle frequency at 10 V, and independent set/reset inputs asynchronous to clock. It performs synchronous state control in digital logic systems such as counters and registers.
For engineers reviewing the CD4027BM datasheet, CD4027BM pinout, CD4027BM application, or CD4027BM equivalent, this page delivers verified functional architecture, real-world timing behavior at multiple VDD levels, noise margin values per supply voltage, absolute maximum ratings, and validated alternative options for industrial control and legacy logic design.
Technical Context
The CD4027BM implements two independent edge-triggered J-K flip-flops with fully buffered Q and Q̅ outputs. Each channel accepts J, K, Set, Reset, and Clock inputs, with state transitions synchronized to the positive-going clock edge and asynchronous Set/Reset overriding clock action.
Its CMOS architecture ensures static operation-state retention with clock held high or low-and supports wide supply range (3–18 V) with input leakage ≤1 μA at 18 V over full temperature range (–55°C to +125°C). Noise margins are specified as 1 V (5 V), 2 V (10 V), and 2.5 V (15 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 18 V - enables direct interface with 5 V TTL, 12 V industrial logic, and battery-backed systems without level shifters |
| Max Clock Toggle Frequency | 16 MHz at VDD = 10 V - supports medium-speed synchronous counting and state machine operation |
| Propagation Delay (tPLH/tPHL) | 45–90 ns at VDD = 15 V - defines minimum clock-to-output timing for reliable setup/hold in cascaded logic |
| Input Leakage Current | ≤1 μA at 18 V, –55°C to +125°C - ensures low power consumption and stable biasing in high-impedance control paths |
| Noise Margin | 2.5 V at 15 V supply - guarantees robust immunity against supply ripple and crosstalk in noisy industrial environments |
| Operating Temperature | –55°C to +125°C - qualified for extended-range automotive, aerospace, and military-grade applications |
| Output Drive Capability | ±6.8 mA at VDD = 15 V - sufficient to drive multiple CMOS inputs or small LED indicators directly |
Pinout & Package
CD4027BM is housed in a 16-pin SOIC (D) package, 7.5 mm × 5.0 mm body size, 1.27 mm pitch, with gull-wing leads and moisture sensitivity level 1 (260°C reflow compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Q2, Q̅2 | Dual complementary outputs for channel 2 - enable direct connection to downstream logic or status indicators without inversion |
| 3 | CLOCK2 | Asynchronous clock input for channel 2 - rising-edge sensitive; requires clean transition to avoid metastability |
| 4 | RESET2 | Active-high asynchronous reset for channel 2 - forces Q2 = 0, Q̅2 = 1 independent of clock |
| 5, 6 | K2, J2 | Data control inputs for channel 2 - determine next-state behavior per J-K truth table on clock edge |
| 7 | SET2 | Active-high asynchronous set for channel 2 - forces Q2 = 1, Q̅2 = 0 independent of clock |
| 8 | VSS | Ground reference - must be low-impedance return path shared with all system ground planes |
| 9, 10 | SET1, J1 | Asynchronous set and data inputs for channel 1 - identical function to pins 7 and 6 but for first flip-flop |
| 11, 12 | K1, RESET1 | K-input and active-high reset for channel 1 - complete independent control of first flip-flop |
| 13 | CLOCK1 | Rising-edge clock for channel 1 - electrically isolated from CLOCK2; supports dual-clock domain use |
| 14, 15 | Q̅1, Q1 | Complementary outputs for channel 1 - pin 14 = inverted, pin 15 = true; usable for differential signaling or feedback |
| 16 | VDD | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm of this pin for stable switching |
Key Features
| Feature | Design Value |
|---|---|
| Static CMOS operation | State retention with clock held high or low - eliminates need for continuous clocking in low-power hold modes |
| Asynchronous Set/Reset | Independent high-level control per channel - enables immediate initialization or fault recovery without waiting for clock edge |
| Wide supply range (3–18 V) | Single part supports 5 V, 12 V, and 15 V logic families - reduces BOM count in mixed-voltage systems |
| 100% tested quiescent current at 20 V | Guaranteed IDD ≤ 20 µA at max stress condition - validates long-term reliability under overvoltage transients |
| JEDEC 138 compliant | Fully conforms to 'B' series CMOS standard - ensures interoperability with legacy CD4000-family designs |
Applications
| Industrial Control Sequencing | Digital Counter Design |
|---|---|
Use Scenario: Implementing step-indexed motor sequencing in PLC-based conveyor systems with discrete sensor inputs. IC Role / Device Role / Timing Role: Dual J-K flip-flop providing synchronous state advancement and direction control via J/K toggling logic. Use Value: Asynchronous reset allows emergency stop override; wide VDD range accommodates 12 V field power without regulation. |
Use Scenario: Building a 4-bit binary up/down counter using cascaded CD4027BM sections with external NAND feedback. IC Role / Device Role / Timing Role: Edge-triggered storage element enabling precise clock-synchronized bit propagation and carry generation. Use Value: 16 MHz max toggle rate at 10 V supports >1 MHz counting; symmetrical output drive ensures clean fanout to next stage. |
| Legacy System Register Replacement | Power-Sensitive State Machine |
Use Scenario: Retrofitting obsolete CD4013B D-type flip-flop circuits in avionics maintenance panels with functionally equivalent J-K topology. IC Role / Device Role / Timing Role: Pin-compatible replacement offering enhanced functionality (J/K toggle vs D latch) while retaining same SOIC-16 footprint. Use Value: Buffered Q/Q̅ outputs match CD4013B drive strength; identical pinout enables drop-in PCB reuse. |
Use Scenario: Battery-powered remote sensor node requiring non-volatile state retention during sleep cycles. IC Role / Device Role / Timing Role: Low-leakage CMOS storage holding configuration bits across deep-sleep intervals with no clock activity. Use Value: Input leakage ≤100 nA at 25°C and 18 V minimizes standby current; static operation avoids refresh overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual J-K flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4027BE | PDIP-16 plastic package; identical electrical specs and pinout; higher thermal resistance (RθJA ≈ 100°C/W vs SOIC's 145°C/W) | Better suited for prototyping and through-hole assembly; not recommended for high-density SMT production | Select CD4027BE only when manual soldering or breadboard evaluation is required. |
| MC14027BDR2G | SOIC-16, same function and pinout; tighter propagation delay variation (±15% vs ±30%), lower max IDD (10 µA at 18 V) | Preferred for precision timing-critical systems where parameter consistency across temperature matters more than legacy compatibility | Choose MC14027BDR2G when designing new products requiring AEC-Q200 alignment or tighter parametric spread. |
Compared with CD4027BE, CD4027BM offers superior thermal performance in reflow-soldered layouts and smaller board area; compared with MC14027BDR2G, CD4027BM provides broader legacy design support and JEDEC 138 compliance for backward-compatible upgrades.
Availability
CD4027BM is available at Aetrix Electronics and suitable for industrial control sequencing, digital counter design, legacy system register replacement, and power-sensitive state machine applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CD4027BM 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 over 90 years of innovation in high-reliability components.
The CD4027BM belongs to TI's legacy CD4000B CMOS logic family, designed specifically for robust, low-power, wide-supply digital control in industrial, aerospace, and automotive environments where long-term availability and radiation-tolerant behavior are critical.
FAQ
What is the maximum clock frequency supported by CD4027BM at 5 V supply?
The CD4027BM supports a maximum clock toggle frequency of 3.5 MHz at VDD = 5 V, as specified in the dynamic electrical characteristics table. This value reflects guaranteed operation under worst-case conditions (CL = 50 pF, TA = 25°C); actual performance may reach 7 MHz under nominal lab conditions, but design margins should adhere to the 3.5 MHz limit for production reliability.
Does CD4027BM support asynchronous reset functionality?
Yes, CD4027BM provides dedicated asynchronous Reset inputs (pins 4 and 12) for each J-K flip-flop channel. When a high logic level is applied to RESET1 or RESET2, the corresponding Q output is forced low and Q̅ high immediately-regardless of clock state or J/K inputs-enabling deterministic fault recovery and initialization.
Is CD4027BM pin-compatible with CD4013B dual D-type flip-flop?
No, CD4027BM is not pin-compatible with CD4013B. While both are 16-pin SOIC dual flip-flops, CD4027BM has separate J, K, Set, Reset, and Clock inputs per channel (12 signal pins), whereas CD4013B uses D, Set, Reset, and Clock (8 signal pins). Their pin assignments differ significantly-e.g., CD4027BM pin 1 = Q2, CD4013B pin 1 = Q1-requiring PCB redesign for substitution.
What is the input leakage current specification for CD4027BM at 25°C and 18 V?
The input leakage current for CD4027BM is specified as ±100 nA at VDD = 18 V and TA = 25°C, per the Static Electrical Characteristics table. This ultra-low leakage enables high-impedance interfacing, such as direct connection to potentiometers or photodiode amplifiers, without introducing measurable offset error or loading effects.
Can CD4027BM operate reliably at –55°C ambient temperature?
Yes, CD4027BM is fully rated for operation from –55°C to +125°C, as confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables. Its CMOS process and packaging meet MIL-PRF-38535 requirements for extended temperature range, making it suitable for downhole instrumentation, polar environment sensors, and space-qualified subsystems where cold-start reliability is essential.
CD4027BM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- JK Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 24 MHz
- Max Propagation Delay @ V, Max CL:
- 90ns @ 15V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 6.8mA, 6.8mA
- Voltage - Supply:
- 3V ~ 18V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CD4027BM FAQ
1.How can I place an order for CD4027BM through Aetrix?
Please submit a Request for Quotation (RFQ) for CD4027BM 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 CD4027BM reliable?
The price and inventory of CD4027BM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD4027BM is usually 5 days.
3.What payment methods are accepted for CD4027BM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD4027BM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD4027BM?
CD4027BM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD4027BM 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 CD4027BM?
For technical support, including CD4027BM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD4027BM requirements.
6.How does Aetrix verify that CD4027BM is sourced from the original manufacturer or authorized distributors?
All CD4027BM 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 CD4027BM meets industry standards.
7.What is the process for return or replacement of CD4027BM?
All CD4027BM units undergo pre-shipment inspection (PSI). If there is an issue with CD4027BM, 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 CD4027BM part is unused and in its original packaging.
Return procedure for CD4027BM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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