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Nexperia USA Inc. HEF4020BT,652
- Part No.:
- HEF4020BT,652
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Counters, Dividers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
HEF4020BT,652.pdf
- Description:
- IC BINARY COUNTER 14-BIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,594
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Product details
Overview
HEF4020BT,652 from Nexperia is a 14-stage CMOS binary ripple counter with asynchronous master reset (MR), clock input (CP) triggered on HIGH-to-LOW transition, and 12 buffered parallel outputs (Q0, Q3–Q13). It operates across 3.0 V to 15.0 V supply, delivers propagation delays as low as 20 ns at 15 V, and is rated for -40 °C to +85 °C - used in digital timing control, frequency division, and event counting circuits.
For engineers reviewing the HEF4020BT,652 datasheet, HEF4020BT,652 pinout, HEF4020BT,652 application, or HEF4020BT,652 equivalent, key selection criteria include its 14-bit ripple architecture, edge-triggered clocking, wide-voltage rail compatibility, and SO16 package suitability for space-constrained industrial logic designs.
Technical Context
The HEF4020BT,652 implements a cascaded chain of 14 static toggle flip-flops, advancing only on the falling edge of CP. Each stage drives the next via internal ripple propagation, resulting in cumulative delay per stage - e.g., Q0 to Q13 delay reaches 140 ns at 15 V with 50 pF load.
MR is an active-HIGH asynchronous reset that forces all outputs LOW regardless of CP state. Inputs feature integrated clamp diodes enabling safe interfacing to voltages exceeding VDD when current-limiting resistors are used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 14-stage binary ripple counter with asynchronous reset |
| Supply Voltage Range | 3.0 V to 15.0 V - supports mixed-voltage system integration without level shifters |
| Propagation Delay (CP→Q0) | 20 ns min at 15 V - enables reliable operation up to 35 MHz clock input |
| Output Count | 12 buffered outputs: Q0, Q3–Q13 - omits Q1/Q2; provides direct access to powers-of-two divisions (2¹ to 2¹³) |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial ambient environments |
| ESD Protection | HBM >2000 V, CDM >1000 V - robust handling in manual assembly and board-level testing |
| Input Transition Rate | Min 0.08 μs/V at 15 V - ensures clean edge recognition even with slow-rising signals |
Pinout & Package
HEF4020BT,652 is housed in a plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width - compatible with standard surface-mount reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Q11 | Buffered output for 2¹¹ = 2048 count division |
| 2 | Q12 | Buffered output for 2¹² = 4096 count division |
| 3 | Q13 | Buffered output for 2¹³ = 8192 count division |
| 4 | Q5 | Buffered output for 2⁵ = 32 count division |
| 5 | Q4 | Buffered output for 2⁴ = 16 count division |
| 6 | Q6 | Buffered output for 2⁶ = 64 count division |
| 7 | Q3 | Buffered output for 2³ = 8 count division |
| 8 | VSS | Ground reference for all internal logic and output drivers |
| 9 | Q0 | LSB output toggling at full clock frequency (2⁰) |
| 10 | CP | Clock input - triggers counter advance on HIGH-to-LOW transition |
| 11 | MR | Asynchronous master reset - clears all stages when HIGH |
| 12 | Q8 | Buffered output for 2⁸ = 256 count division |
| 13 | Q7 | Buffered output for 2⁷ = 128 count division |
| 14 | Q9 | Buffered output for 2⁹ = 512 count division |
| 15 | Q10 | Buffered output for 2¹⁰ = 1024 count division |
| 16 | VDD | Positive supply rail - supports 3–15 V operation |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (3–15 V) | Eliminates need for separate voltage regulators in multi-rail systems |
| Fully static CMOS design | Enables indefinite hold states with zero static power draw at standby |
| Clamp diode-equipped inputs | Permits direct connection to 18 V logic or open-collector sources using series resistors |
| Symmetrical output drive | Delivers matched rise/fall times and ±3.6 mA drive at 15 V for consistent signal integrity |
| JEDEC JESD13-B compliance | Ensures interoperability with legacy 4000-series logic families in mixed-design systems |
Applications
| Industrial Timer Modules | Digital Frequency Dividers |
|---|---|
|
Use Scenario: Programmable delay generation in PLC I/O expansion modules where precise time intervals (e.g., 1 s, 10 s, 60 s) are derived from a 1 kHz crystal oscillator. IC Role / Device Role / Timing Role: Ripple counter dividing clock by 1000, 10,000, or 60,000 using Q10 (1024), Q13 (8192), or cascaded outputs. Use Value: Eliminates microcontroller firmware overhead for basic timing; reduces BOM cost versus programmable timers. |
Use Scenario: Generating sub-harmonics of RF carrier signals in amateur radio transceivers, such as deriving 10 MHz from a 40 MHz VCXO. IC Role / Device Role / Timing Role: First-stage divider producing 2⁴ = 16× reduction before further division by PLL or prescaler ICs. Use Value: Provides deterministic, jitter-free integer division without phase ambiguity inherent in synchronous counters. |
| Event Counter Interfaces | Legacy System Clock Scaling |
|
Use Scenario: Capturing pulse counts from mechanical encoders or flow meters in HVAC control panels operating at 12 V DC. IC Role / Device Role / Timing Role: Edge-sensitive counter accumulating pulses on CP while MR resets on overflow or host command. Use Value: Direct TTL/CMOS-compatible interface avoids signal conditioning; high-noise immunity prevents false counts in electrically noisy duct environments. |
Use Scenario: Adapting modern 5 V microcontrollers to legacy 10 V or 15 V bus architectures in retro-computing restoration projects. IC Role / Device Role / Timing Role: Level-tolerant clock divider generating 5 V-compatible timing signals from higher-voltage system clocks. Use Value: Enables drop-in replacement of obsolete 4020 variants without redesigning power distribution or signal routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar binary counter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4020BE | Same 14-stage function but TI-manufactured; wider propagation delay spread (105–360 ns at 5 V) and lower ESD rating (HBM 2 kV typical, not guaranteed) | Lacks clamp diodes - requires external protection when interfacing to >5.5 V signals | Prefer HEF4020BT,652 for industrial environments requiring robust input tolerance and tighter timing specs. |
| 74HC4020PW | High-speed CMOS variant; faster max frequency (70 MHz at 5 V) but limited to 2–6 V supply and no 15 V operation | Not suitable for mixed-voltage or 12/15 V legacy systems; lacks MR pin clamping | Choose HEF4020BT,652 when supply flexibility, temperature range, or input ruggedness outweigh raw speed requirements. |
Compared with CD4020BE and 74HC4020PW, HEF4020BT,652 uniquely balances wide-voltage operation (3–15 V), industrial temperature range, built-in input protection, and JEDEC-standardized timing - making it the preferred choice for long-lifecycle embedded counters where reliability trumps peak speed.
Availability
HEF4020BT,652 is available at Aetrix Electronics and suitable for industrial timer modules, digital frequency dividers, event counter interfaces, and legacy system clock scaling requiring stable component supply across extended temperature and voltage ranges.
Supply support for HEF4020BT,652 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 global semiconductor expert specializing in high-performance, energy-efficient logic, analog, and discrete components - founded in 2017 as a spin-off from NXP Semiconductors.
The HEF4020BT,652 belongs to Nexperia's legacy-compatible 4000B logic family, designed specifically for industrial and automotive-adjacent applications demanding wide supply range, high noise immunity, and long-term product availability.
FAQ
What is the maximum clock frequency supported by HEF4020BT,652?
The maximum clock frequency is 35 MHz at VDD = 15 V, 25 °C, and CL = 50 pF, as specified in Table 7. At 5 V, fmax drops to 10 MHz due to increased propagation delay. This value assumes clean edges meeting the recommended input transition rate (0.08 μs/V at 15 V) and proper load capacitance management.
Does HEF4020BT,652 include Q1 and Q2 outputs?
No - the HEF4020BT,652 provides only Q0 and Q3 through Q13 (12 total outputs), omitting Q1 and Q2. This matches the original HEF4020B functional specification and simplifies PCB layout by reducing pin count while retaining all major division ratios (2⁰, 2³–2¹³).
Can HEF4020BT,652 be operated at 2.5 V supply?
No - the absolute minimum recommended supply voltage is 3.0 V per Table 5. Operation below 3.0 V risks unreliable state retention, increased propagation delay variation, and potential failure to meet static characteristics (e.g., VIH/VIL thresholds), as confirmed by limiting values and parametric ratings.
Is the MR pin internally pulled down?
No - MR has no internal pull-down. It is a high-impedance CMOS input requiring explicit biasing. To prevent spurious reset, a 10 kΩ pull-down resistor to VSS is recommended in floating or switch-driven configurations, especially in noisy industrial environments.
HEF4020BT,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 4000B
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Binary Counter
- Direction:
- Up
- Number of Elements:
- 1
- Number of Bits per Element:
- 14
- Reset:
- Asynchronous
- Timing:
- -
- Count Rate:
- 35 MHz
- Trigger Type:
- Negative Edge
- Voltage - Supply:
- 3 V ~ 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
HEF4020BT,652 FAQ
1.How can I place an order for HEF4020BT,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for HEF4020BT,652 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 HEF4020BT,652 reliable?
The price and inventory of HEF4020BT,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HEF4020BT,652 is usually 5 days.
3.What payment methods are accepted for HEF4020BT,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HEF4020BT,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HEF4020BT,652?
HEF4020BT,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HEF4020BT,652 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 HEF4020BT,652?
For technical support, including HEF4020BT,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HEF4020BT,652 requirements.
6.How does Aetrix verify that HEF4020BT,652 is sourced from the original manufacturer or authorized distributors?
All HEF4020BT,652 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 HEF4020BT,652 meets industry standards.
7.What is the process for return or replacement of HEF4020BT,652?
All HEF4020BT,652 units undergo pre-shipment inspection (PSI). If there is an issue with HEF4020BT,652, 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 HEF4020BT,652 part is unused and in its original packaging.
Return procedure for HEF4020BT,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HEF4020BT,652 Tags
-
74HC393BQ,115
Nexperia USA Inc.
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SN74LV8154PWR
Texas Instruments
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MC14516BDR2G
onsemi
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MC14020BDR2G
onsemi
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MC100EP32DTR2G
onsemi
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MC100EP016AMNG
onsemi
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MC100EP016AFAG
onsemi
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SN74LV163ADR
Texas Instruments
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SN74LV163APWR
Texas Instruments
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SN74HC393DR
Texas Instruments
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SN74HC161DR
Texas Instruments
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SN74HC163DR
Texas Instruments
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