CD4013 Dual D Flip-Flop ICs and CMOS Logic
CD4013 dual D-type flip-flops and neighboring CMOS logic
This collection centers on CD4013-family dual D-type flip-flop ICs in through-hole and surface-mount packages. It also includes multi-model listings whose choices cover other CD4000-series functions. A product title containing CD4013 does not mean every variant is a CD4013, and a list of part numbers does not necessarily describe a mixed assortment. Select the exact model, package and piece count shown on the product option before ordering. These are bare integrated circuits, not assembled timing boards or ready-to-run controllers.
What a CD4013 does
A CD4013-type IC contains two separate D-type flip-flop stages. Each stores a logic state: on the active clock transition, a stage samples its D input and presents that state at Q, with a complementary output provided on the device. Independent asynchronous set and reset controls can override normal clocked operation according to the manufacturer's truth table. The word “dual” describes two flip-flops inside one chip, not two chips in the package or a two-piece order. For any design, consult the specific manufacturer's timing diagram and pin assignment: clock edge, control polarity, simultaneous set/reset behavior, setup and hold time, and output state during power-up cannot safely be derived from a generic storefront label.
D flip-flops are building blocks for clocked state storage, sequencing and digital signal conditioning when the full circuit meets the device's electrical and timing requirements. A feedback connection can make a suitable D flip-flop toggle, but this is a circuit design choice, not an independently specified frequency-divider module. Neither a free-running oscillator nor debouncing circuitry is included just because a listing says “logic chip.” If an asynchronous input is unused, terminate it at a defined valid logic level as specified in the chosen device's datasheet; do not leave CMOS inputs floating. For a clocked application, evaluate setup/hold margins, clock-edge quality, metastability risk at asynchronous boundaries, and the required initialization behavior rather than treating the chip as a guaranteed drop-in controller.
Packages and actual CD4013 choices
The listings include CD4013BE in DIP-14/PDIP-14 through-hole format, CD4013BM and CD4013BM96 described as SOP-14 or SOIC-14 surface-mount choices, and a CD4013BPWR title described as TSSOP-14. A listing with a CD4013BE DIP-14 versus CD4013BM SOP-14 model selector offers alternative package forms, not both packages in the same order. SOIC, SOP and TSSOP labels can conceal different body widths or lead pitches; verify the dimensional drawing and manufacturer's suffix before choosing a PCB footprint. A DIP-14 socket will not accept a surface-mount device. “14 pins” is not sufficient to establish pin-compatible substitution across other CD4000 functions.
Some dedicated CD4013BM products state 10PCS/LOT, 30PCS or 5/10-piece choices; a DIP-14 product states 20 PCS. In a separate multi-model SMD listing, the option CD4013BM 20PCS means the CD4013BM model and its stated count, whereas CD4016BM 5PCS and CD4028BM 10PCS are different devices and counts. A Color field often means part number, not physical color. A single “Default Title” choice does not itself confirm a manufacturer, lot traceability, or electrical test. Always check the chosen variant and the product's actual packing details before estimating the quantity required for a build.
Compare electrical characteristics before substituting
CD4013BE, CD4013BM, CD4013BM96 and CD4013BPWR-style names identify different order codes or packages; the ending may encode packaging, reel format or vendor-specific distinctions. Verify the complete marking and manufacturer's documentation, not only the CD4013 root. Check the recommended operating supply range for that exact device, input thresholds at your supply voltage, output-high and output-low performance at the intended load, maximum clock rate under stated conditions, propagation delay, setup/hold and asynchronous set/reset timing, operating temperature range and absolute-maximum limits. Absolute-maximum ratings are stress limits, not recommended operating conditions.
Supply claims in the source listings are inconsistent or generic: one title says 3V–18V while other specification tables say only “standard,” “international standard,” “-” or leave values blank. Another multi-model listing presents 220V as a dissipation-power entry and -85°C to +105°C as a temperature claim across unlike chips. These are not validated collection-wide ratings. Do not connect any CD4013 input or supply directly to mains, high-voltage rails or an unknown signal based on that text. Confirm permissible voltage, logic-level compatibility and isolation requirements for the complete circuit using manufacturer documentation. Vendor descriptions that call a flip-flop a “voltage regulator” or “drive IC” do not change its actual logic function.
Multi-model listings: choose by function, not the headline
Several listings place CD4013 alongside CD4001 and CD4011. CD4001 is a NOR-gate family member; CD4011 is a NAND-gate family member. Neither performs the same clocked storage function as CD4013. CD4017 is a decade counter/divider, CD4040 and CD4020 are binary counter types, CD4060 combines counting with oscillator-related circuitry subject to its device documentation, and CD4028 is a decoder. CD4015 and CD4094 are shift-register types, while CD4518 is a dual counter. Their pin maps, functions and package requirements differ even where the same DIP or SOP pin count is mentioned.
Other offered options serve different purposes: CD4016 and CD4066 are analog switch types; CD4051, CD4052 and CD4053 are analog multiplexers/demultiplexers; CD4046 is a phase-locked-loop family device; CD4047 and CD4541 are timing/oscillator-related devices. CD4049, CD4069 and CD4069UB are inverter/buffer types, while CD40106 is a Schmitt-trigger inverter and CD4093 is a Schmitt-trigger NAND. CD4511 is a BCD-to-display driver and CD4553 is a counter/display-related IC. These functions should not be substituted for a dual D flip-flop based on a common “CMOS logic chip” headline. Some titles mention CD4067 or CD4027 without offering those codes as selectable variants; read the available choices rather than assuming title keywords denote in-stock options or the supplied contents.
One product title describes an assortment of CD4001/CD4011/CD4013/CD4017 in both DIP and SOIC and calls everything a “CMOS Dual D-Type Flip-Flop.” In reality the Color selection distinguishes CD4001BE/BM, CD4011BE/BM, CD4013BE/BM and CD4017BE/BM. Only the CD4013 choices correspond to the dual D flip-flop function. Likewise a “logic gate IC chip” title lists CD4013 among CD4011, CD4001, CD4094, CD4060, CD4069, CD40106, CD4051/52/53, CD4093 and CD4017; the selected Color is the specific part. A headline saying DIP14/16 cannot replace the package designation on the selected option or a manufacturer's outline drawing.
Practical selection workflow
- Define the logic operation: two edge-triggered D storage stages with set/reset means look for a CD4013 variant. For a NAND/NOR gate, counter, analog switch or shift register, choose the appropriate different part number instead.
- Identify the full code and manufacturer: compare the selected model with the host board's bill of materials and datasheet. Similar root numbers from different suppliers require an electrical and mechanical check.
- Match the physical build: choose DIP-14 for the applicable through-hole footprint or a specifically dimensioned SOP/SOIC/TSSOP-14 variant for a compatible surface-mount footprint. Inspect pitch, body width, orientation and pin 1.
- Check electrical margins: verify recommended VDD, VIH/VIL, VOH/VOL at load, input leakage, output drive, clock and asynchronous input timing at the intended temperature. Do not use unqualified “standard” specifications as design values.
- Confirm order contents: read Color or Model Number for the exact chip, then confirm whether the listing states 5, 10, 20 or 30 pieces. A 10PCS multi-part headline typically refers to the selected choice, not ten of every model named.
- Review replacement risk: for repairs, match marking, package and function, and verify the external clock, control polarity and surrounding circuit. “Original,” “genuine,” or “100% quality” in supplier copy is not a verified certification or test report.
Frequently asked questions
Is CD4013 a logic gate or a memory device?
It is a dual sequential-logic D flip-flop. It stores two logic states while appropriately powered, unlike a combinational NAND or NOR gate. It is not nonvolatile memory and does not retain its state without power.
Does a CD4013 contain two chips or two flip-flops?
Two flip-flop stages are integrated in one IC. Order quantity is a separate attribute: a 10-piece order generally means ten IC packages, but the selected product details control the actual contents.
Can CD4013BM SOP-14 replace CD4013BE DIP-14?
They are different mounting formats. Even if a manufacturer's electrical functions align, the physical footprints differ. Compare the exact supplier datasheets, pinout and PCB design before choosing an alternate package.
Does choosing CD4011 from a CD4013 headline still supply a flip-flop?
No. CD4011 is a NAND-gate part number. A multi-model listing can expose independent single-model options under one long headline; select CD4013 explicitly when a CD4013 flip-flop is required.
Can I use the 3V–18V claim for every product here?
No. The collection contains many different functions and suppliers, and some seller specification fields are generic or contradictory. Use the recommended operating conditions in the exact manufacturer's datasheet for the selected variant.
Does the chip include a clock oscillator or a complete circuit?
No oscillator or assembled board is implied by a bare CD4013 IC listing. Its behavior depends on the external clock, logic signals, supply, layout and supporting circuitry designed for the exact part.
