Logic ICs
Products (362)
CD4060BM - 14-Bit Counter/Divider | Texas Instruments
Texas Instruments CD4060BM is a CMOS 14-stage ripple-carry binary counter and divider with an integrated oscillator section, a 14-bit count output, operation from 3 V to 18 V, and a maximum listed frequency of 24 MHz, all in a 16-pin SOIC package. It combines a binary counting chain with an oscillator capable of supporting resistor-capacitor or crystal-based timing networks, making it suitable for digital frequency division, timing generation, and clock-derived waveforms. A CMOS binary counter is a sequential logic device that increments a binary value on each active clock transition. The CD4060BM belongs to the counter and divider hierarchy, within logic ICs and digital timing ICs. Its ripple-counter architecture provides multiple frequency-division outputs, while the oscillator section determines the source frequency used by the internal counting stages. This combination can reduce the need for separate oscillator and divider components in low-to-moderate timing systems. The verified device information identifies a 14-stage ripple-carry architecture, a 14-bit counter output, 3 V to 18 V supply operation, and operation up to 24 MHz. The 16-SOIC package is a surface-mount package from the SOIC family. The counter uses negative-edge triggering, as identified in the DigiKey listing, which must be considered when connecting it to external clock and reset circuitry. Individual timing-pin and output-pin assignments are not available in the supplied source snippets. The CD4060BM architecture is useful when a system needs several divided versions of one clock. Each ripple stage provides a progressively divided frequency, allowing a design to obtain multiple timing references without cascading separate divider ICs. Because the device is implemented in CMOS, it belongs to the low-power logic family and can be used in battery-operated or low-leakage digital systems when operated within the documented voltage and frequency limits. Typical uses include digital clock dividers, pulse-generation circuits, industrial timing modules, periodic-event generators, microcontroller clock subsystems, waveform counters, and laboratory timer boards. In these applications, the integrated oscillator reduces component count, while the divided outputs provide convenient frequencies for counters, displays, control logic, or communication timing. External component selection determines whether the oscillator uses an RC network or a crystal-based arrangement. Designers should verify oscillator-component values, output-drive requirements, reset timing, and unused-output handling directly against the TI CD4060B datasheet. Maximum operating frequency varies with supply voltage and operating conditions, so a 24 MHz design should not be assumed to work identically across the complete 3 V to 18 V range. Decoupling and unused-input treatment should also follow the manufacturer's recommendations. This product record combines verified manufacturer, distributor, and cross-reference information with practical selection guidance, packaging details, pricing context, and an honest assessment of drop-in replacement availability. It distinguishes documented electrical facts from parameters that still require confirmation from the complete manufacturer datasheet.
CD4063BD - 4-Bit CMOS Magnitude Comparator | Harris
The Harris Corporation CD4063BD is a 4-bit CMOS magnitude comparator with eight comparison inputs, three active-high outputs, and three cascading inputs in a 16-pin ceramic dual in-line package. It compares two 4-bit binary or BCD words and reports whether the first word is less than, equal to, or greater than the second word. The device is designed for computer and logic applications that require unsigned magnitude comparison. A magnitude comparator is a combinational logic device within the broader digital comparator family. Its role in a digital system hierarchy is to examine parallel numerical words and generate control or status signals describing their relative order. The CD4063B belongs to the CD4000 CMOS logic family, whose members use complementary MOS logic and are designed for low-power digital systems operating from a common supply rail. The CD4063BD provides eight comparison inputs designated A3 through A0 and B3 through B0. Its three active-high outputs indicate A less than B, A equal to B, and A greater than B. Three cascading inputs allow multiple comparator sections to be combined, making the circuit useful when comparing widths greater than four bits. The ceramic DIP construction also distinguishes the BD grade from commercial plastic-package variants. Operationally, the comparator evaluates all four corresponding bit pairs and produces mutually related ordering outputs. In a cascaded design, the upper section compares the most significant four-bit word and passes the result to the lower section, where it is combined with the lower word comparison. This arrangement supports exact selection, sorting, address decoding, and numerical threshold functions without requiring a general-purpose processor to perform every comparison. Typical applications include digital counters, arithmetic control, industrial control systems, test equipment, address comparators, and embedded control logic. In an address-selection circuit, the comparator can assert an equality output when an input address matches a programmed reference word. In a cascaded magnitude-comparison system, multiple CD4063BD devices can compare wider operands while retaining the three standard ordering outputs at each section. Designers should account for CMOS input and output behavior, supply bypass capacitors, unused inputs, and propagation delay when cascading several stages. Inputs must not float, and every unused input should be tied to a defined logic level. Because the verified source data does not provide the complete electrical limits, pin numbering, or timing tables, those values require confirmation from the applicable manufacturer datasheet before release to production.
CD4063BE 4-Bit Magnitude Comparator | Texas Instruments
The Texas Instruments CD4063BE is a CMOS 4-bit magnitude comparator with eight binary or BCD comparison inputs, three active-high outputs, and cascading inputs in a 16-lead PDIP package. It compares two 4-bit words and indicates whether the A word is less than, equal to, or greater than the B word. The device is intended for computer and logic applications where arithmetic, sorting, address decoding, and control sequencing require a direct numerical comparison. A magnitude comparator is a logic IC that compares two multi-bit numeric operands and produces separate results for the less-than, equal-to, and greater-than conditions. In the digital electronics hierarchy, the CD4063BE belongs to the comparator and logic IC category, within the broader CMOS and semiconductor families. Its three outputs allow a system to respond immediately to the relationship between the two input words rather than performing the comparison through multiple gate-level operations. The CD4063BE provides a practical four-bit comparison function using binary or BCD-coded inputs. The active-high A<B, A=B, and A>B outputs make the results easy to combine with other CMOS logic. Three cascading inputs allow multiple comparator sections to be connected when the application requires comparison beyond four bits. The 16-lead plastic dual-inline package provides through-hole assembly and a conventional DIP footprint. Because the CD4063BE is a CMOS comparator, its design emphasizes low power consumption and compatibility with other CD4000-series logic. The device is suitable for digital control systems, industrial controllers, counters, sorting networks, and computer interface logic. The provided manufacturer and distributor information identifies the operating family as CD4063B and the E suffix as the 16-lead plastic dual-inline package option. Typical uses include comparing accumulated digital measurements, resolving priority among several encoded inputs, detecting when a counter has reached a threshold, and supporting arithmetic or sequencing logic. The cascading feature is particularly useful for larger designs, but propagation delay must be considered when multiple stages are combined. The principal design consideration is ensuring that all unused CMOS inputs are connected to a defined logic level and that supply and signal levels remain within the device’s specified operating limits. Because those voltage and timing values were not included in the supplied verified data, engineers should confirm them in the manufacturer datasheet before finalizing a design. Input and output decoupling and clean grounding remain important in systems containing switching noise. This product page combines verified manufacturer and distributor information with practical comparison guidance, replacement considerations, and design notes that are not consolidated in a single manufacturer document. It is intended to help engineers identify the correct logic function, package, sourcing route, and application fit before committing the CD4063BE to a PCB design.
CD4063BF - 4-Bit CMOS Magnitude Comparator | Texas Instruments
The Texas Instruments CD4063BF is a 4-bit CMOS magnitude comparator with eight binary or BCD comparison inputs, three comparison outputs, and three cascading inputs, packaged in a 16-CDIP ceramic dual-in-line package. The device reports whether word A is less than, equal to, or greater than word B and supports expansion through its cascade inputs. Its specified operating-temperature range is -55°C to +125°C, making the CD4063BF suitable for industrial, control, and legacy-compatibility applications where a wide temperature range is important. A magnitude comparator is a combinational logic circuit used to determine the relative ordering of two multibit numbers. Within the logic hierarchy, the CD4063BF belongs to the comparator and arithmetic-comparison category, the broader CMOS logic family, and ultimately the digital integrated-circuit and semiconductor categories. Unlike a dedicated arithmetic logic unit, a comparator provides only the relational result between two operands, making it useful for control sequencing, sorting stages, threshold decisions, and binary-to-BCD comparison systems. The CD4063BF accepts two groups of four comparison inputs labeled A3 through A0 and B3 through B0. Its primary outputs indicate A less than B, A equal to B, and A greater than B. Additional cascade inputs permit the comparison function to be expanded beyond four bits. The chip is also described as pin-compatible with the standard 7485 TTL magnitude comparator, which supports legacy board-level replacement planning when supply conditions or operating requirements need review. Technically, the CD4063BF belongs to the CD4000 CMOS logic family and is intended for computer and logic systems that compare binary or BCD words. The comparison is implemented as combinational logic, so output states follow the applied input states without a clock. Cascade control determines how the device participates in a wider comparison, allowing engineers to construct larger word-length comparators while preserving the same output convention. Typical uses include industrial sequencing and sorting control, binary or BCD decision logic, interface adaptation between older TTL and CMOS systems, and embedded logic where three relational states must be generated from two 4-bit operands. The -55°C to +125°C operating range also makes the device relevant to temperature-extended industrial equipment, although system-level supply, noise, and timing constraints must still be checked against the manufacturer datasheet. When designing around the CD4063BF, verify every voltage and timing value against the applicable manufacturer data before release. In particular, confirm the supply range, input and output propagation delays, output-drive capability, and unused-input states for the exact package and grade. Because the CD4063BF is a through-hole CDIP device, also allow for lead spacing, insertion clearance, and possible obsolete-part procurement risk. This product record combines the verified TI product description, package and temperature information, distributor availability evidence, and explicitly identified same-family alternatives. It also adds practical comparison guidance and design notes that distinguish a documented drop-in candidate from merely similar CMOS logic devices.
CD4063BK - 4-Bit Magnitude Comparator | Texas Instruments
The Texas Instruments CD4063BK is a CMOS 4-bit magnitude comparator that determines whether two 4-bit binary or BCD words are less than, equal to, or greater than one another. The device accepts eight comparison inputs through A3–A0 and B3–B0, provides three decision outputs for A<B, A=B, and A>B, and includes three cascading inputs so multiple comparator sections can be combined for wider word lengths. It is supplied in a 16-pin surface-mount package identified by the “K” package suffix. A magnitude comparator is a combinational logic circuit within the broader hierarchy of CMOS logic ICs, digital logic, and integrated circuits. It evaluates the numerical relationship between two unsigned operand groups without performing subtraction. This makes the CD4063BK useful when a digital system must make an immediate decision, select a value, sort records, determine equality, or control a downstream branch according to the relative magnitude of two data words. The verified manufacturer information identifies the CD4063B as a 4-bit magnitude comparator intended for computer and logic applications. Its eight comparing inputs represent two complete 4-bit words, while the A<B, A=B, and A>B outputs provide explicit relationship results. Three cascading inputs extend the architecture beyond four bits when larger comparisons are required. Exact propagation-delay, supply-voltage, output-current, and temperature limits were not included in the supplied source excerpts and therefore are not inferred here. Operationally, the comparator evaluates the most significant unequal bit first, using cascaded equality information to support wider comparisons. A design should treat the equality and cascade signals as part of the decision path and preserve their logic levels during unused-input conditions. The available official product page confirms the functional architecture, while the supplied distributor records identify CD4063BK as an active, stocked logic-comparator offering. Typical applications include digital control systems, sorting and selection logic, address and threshold comparisons, arithmetic-system status checks, industrial control logic, and embedded equipment where two binary or BCD values must be evaluated. Cascading capability is particularly useful when the system needs a comparison wider than four bits or when several independently generated results must be combined. Designers should confirm the manufacturer pinout, supply limits, timing characteristics, and unused-input rules against the official CD4063B documentation before layout release. Because this page synthesizes the verified functional description, source links, lifecycle information, and replacement guidance, it provides practical context beyond the distributor listing while clearly identifying parameters that still require datasheet confirmation.
CD4063BM - 4-Bit CMOS Magnitude Comparator | TI
The Texas Instruments CD4063BM is a 4-bit CMOS magnitude comparator with eight binary or BCD comparison inputs, three active-high outputs for less-than, equal-to, and greater-than results, and three cascading inputs, supplied in a 16-pin SOIC package. It compares two unsigned 4-bit words and reports their relative magnitude without requiring an external arithmetic processor. A magnitude comparator is a digital logic circuit that determines whether one numeric word is less than, equal to, or greater than another. The CD4063BM belongs to the CMOS logic family and occupies the hierarchy of comparator, digital comparator, logic IC, and integrated circuit. Its binary and BCD support makes it useful in computer, control, arithmetic, and digital decision-making systems where a compact hardware comparator can simplify control logic. The principal features include eight comparison inputs designated A3 through A0 and B3 through B0, plus active-high A<B, A=B, and A>B outputs. Cascading inputs allow multiple comparator sections to be combined when comparing numbers wider than four bits. The manufacturer identifies the CD4063B family as pin-compatible with the standard 7485 TTL type, while the CD4063BM is the 16-SOIC ordering variant. Internally, the device compares the two 4-bit words by evaluating their binary significance and generating mutually exclusive magnitude decisions. This hardware approach provides a direct result without a clock or iterative software loop. For cascading applications, the additional inputs allow a lower-order comparison section to inform a higher-order section, supporting larger multibit comparisons from identical functional blocks. Typical uses include digital control systems, industrial counter and sequencing logic, computer address and data-path comparisons, BCD processing, and embedded decision logic. The three explicit result outputs also allow a controller to branch immediately according to whether the two operands are less than, equal to, or greater than one another. Designers should account for propagation delay, supply-voltage requirements, unused inputs, and output loading when integrating the comparator into longer digital chains. Cascaded sections should follow the manufacturer's input connection and timing guidance. The supplied verified data does not include the complete electrical timing table, so voltage, current, delay, and temperature limits must be confirmed in the manufacturer datasheet before release. This page combines the verified manufacturer description, distributor inventory and price observations, same-package replacement options, and practical design guidance. It separates confirmed CD4063BM facts from parameters that still require datasheet verification, providing engineers with a concise selection and implementation reference.
CD4093BM96G4 - CMOS Quad 2-Input NAND Schmitt Trigger | TI
The CD4093BM96G4 is a CMOS quad 2-input NAND Schmitt trigger integrated circuit from Texas Instruments, packaged in a 14-pin SOIC (SOIC-14). It operates over a supply voltage range of 3V to 18V, making it suitable for a wide variety of battery-powered and industrial applications. The device features four independent NAND gates, each with Schmitt trigger action on both inputs, providing hysteresis for noise immunity and slow input signal conditioning. A Schmitt trigger is a comparator circuit with hysteresis that converts noisy or slowly changing input signals into clean digital outputs. In the CD4093B, each gate switches at different thresholds for positive-going (VP) and negative-going (VN) signals, with the difference (hysteresis) ensuring stable switching and preventing multiple transitions. This makes the CD4093B ideal for interfacing with sensors, switches, and other real-world signals that may have slow edges or noise. Key features of the CD4093BM96G4 include a wide supply voltage range of 3V to 18V, low quiescent current of typically 4µA, and output drive capability of 3.4mA sink and source. The Schmitt trigger inputs provide hysteresis of typically 0.9V at 5V supply, improving noise margin. The device is fully static, allowing operation at any frequency from DC to several MHz, and is pin-compatible with the standard CD4093B family. The CD4093B is fabricated using silicon-gate CMOS technology, which provides low power dissipation and high noise immunity. The Schmitt trigger action is implemented using a feedback network that creates the hysteresis window. This architecture allows the device to operate reliably in noisy environments and to condition signals with slow rise/fall times, such as those from RC oscillators or mechanical switches. Typical applications include waveform shaping, pulse generation, debouncing of mechanical switches, and as an oscillator in RC timing circuits. The CD4093BM96G4 is also used in sensor signal conditioning, where its hysteresis prevents false triggering. Its wide operating voltage range makes it suitable for both 5V and 3.3V logic systems, as well as higher-voltage industrial controls. When designing with the CD4093BM96G4, ensure that input voltages do not exceed the supply rails, and consider adding a series resistor to limit input current if the input may exceed the supply. The Schmitt trigger inputs eliminate the need for external hysteresis components, simplifying circuit design. For high-speed applications, note that propagation delay is typically 80ns at 5V, which is adequate for most control and timing functions.
CD4502BE - 6-Channel 3-18V CMOS Inverting Buffer | Texas Instruments
Texas Instruments CD4502BE is a 6-channel, inverting CMOS strobed buffer with three-state push-pull outputs, a 3 V to 18 V supply range, and a 16-pin PDIP package. The device combines six inverter channels, common strobe and output-disable control, and bus-interface logic in one CMOS package. A CMOS buffer is a digital logic device that strengthens or isolates signals traveling between circuit sections. A hex inverter contains six independent inverter channels, while a three-state output can be driven low, driven high, or placed in a high-impedance state. The CD4502BE therefore belongs to the CMOS logic family within the broader digital IC and logic-level interface hierarchy. Key verified features include six inverting channels, push-pull output behavior, a strobed operating mode, common output disable, and operation from 3 V to 18 V. Its output-disable input places all six outputs in the high-impedance state when driven by a logic 1. The device is specifically identified as a CMOS strobed hex inverter/buffer suitable for interfacing integrated circuits with data buses. The verified noise-margin figures are 1 V at a 5 V supply, 2 V at 10 V, and 2.5 V at 15 V. These values help quantify the input-level margin available between CMOS stages across the stated supply conditions. The device also meets the requirements identified in the provided source as JEDEC Tentative Standard No. 13B for B-series CMOS devices. Typical applications include CMOS-to-TTL hexadecimal buffering, tri-state data-bus interfacing, level translation between compatible logic families, and systems that require a shared strobe or output-disable function. The inverting architecture must be considered in systems where signal polarity affects downstream interpretation. When designing around the CD4502BE, keep unused inputs in a defined logic state and account for the three-state output behavior during bus contention and disable transitions. The 16-pin PDIP package also requires adequate lead clearance during assembly and appropriate handling in production workflows. This page combines verified manufacturer and distributor information with pin-compatible alternatives, parameter comparisons, pricing context, and practical integration guidance. It distinguishes published characteristics from unavailable details instead of estimating unverified electrical values.
CD4502BM - 6-Channel 3-18V CMOS Inverter | Texas Instruments
Texas Instruments CD4502BM is a 6-channel CMOS strobed hex inverter/buffer with 3-state outputs, a 3 V to 18 V operating supply range, and a 16-pin SOIC package. The device provides one inverter per channel, common output-disable and inhibit control, push-pull outputs, and noise margins of 1 V at 5 V, 2 V at 10 V, and 2.5 V at 15 V. A CMOS hex inverter/buffer is a logic-family device that combines inversion with controlled output impedance. The CD4502B belongs to the broader hierarchy of CMOS logic, logic buffer or driver, interface IC, and digital semiconductor. Its high-impedance output state allows multiple channels to share a common data bus without active drive contention, while its low-noise-margin operating limits define the voltage range in which attached CMOS circuitry is reliably interpreted. Key features include six independently buffered inverter channels, three-state outputs, a common output-disable input, and a common inhibit input. A logic 1 on OUTPUT DISABLE places all six outputs in the high-impedance state. A logic 1 on INHIBIT drives all six outputs to logic 0 when OUTPUT DISABLE is low. According to the Texas Instruments product page, the device can drive two standard TTL loads, equivalent to six times the JEDEC B-series IOL standard. The CD4502B follows the JEDEC B-series CMOS framework and operates across a 3 V to 18 V supply range. CMOS construction provides high input impedance and low static supply demand, while the buffered push-pull output configuration supports dependable drive into compatible logic loads. The three-state function is especially useful for bidirectional or shared-bus arrangements where multiple devices must be electrically isolated while disabled. Typical uses include CMOS-to-TTL interfacing, data-bus isolation, instrument control, industrial automation, embedded control, and digital signal conditioning. The common disable and inhibit functions allow a system controller to place an entire six-channel group into a safe state or force the group to logic 0, reducing external control logic and simplifying fault handling. The primary design consideration is logic-level compatibility. Supply voltage, input thresholds, fanout, and the enabled or disabled state of every driver must be checked before connecting outputs to a shared bus. Unconnected inputs should not be left floating, and supply bypassing should follow the manufacturer's recommended layout to limit transient noise during output state changes. This product record combines verified manufacturer and distributor information, a pin-compatible alternative review, application guidance, and design-specific cautions. It is intended to help engineers identify the correct logic function, verify package compatibility, and implement the CD4502BM without relying only on a distributor parameter summary.
CD4503BE - 6-Channel 3-18V Tri-State Buffer | Texas Instruments
Texas Instruments CD4503BE is a six-channel non-inverting CMOS buffer with three-state outputs, a 3 V to 18 V operating supply range, and two independent disable controls in a 16-lead dual-in-line plastic package. The device provides high sink- and source-current capability, allowing its outputs to be placed in a high-impedance state for bus isolation, shared-data-line arbitration, and cascaded digital systems. According to the manufacturer, the CD4503B family is pin compatible with MM80C97, MC14503, and 340097 industry types. A logic buffer or buffer amplifier is a digital IC that provides buffering, isolation, or current drive between circuit sections. The CD4503BE belongs to the CMOS logic family, whose hierarchy is tri-state buffer, non-inverting buffer, digital logic IC, and semiconductor. Unlike a simple inverter, this device preserves input logic polarity while adding three-state output control. It is useful where multiple logic devices must share a data path without driving each other simultaneously. The six outputs use push-pull drive and can be disabled independently in two groups: one control disables four buffers, while the other disables the remaining two. This grouped control enables a four-channel data bus and a two-channel control or status bus to be isolated together. A 16-pin CD4503BE is useful when a design needs more conventional digital voltage levels than low-voltage CMOS families provide. The CD4503B operates from 3 V to 18 V and is specified with 5 V, 10 V, and 15 V parametric ratings. The manufacturer reports a maximum input current of 1 µA at 18 V across the full package-temperature range and 100 nA at 18 V and 25°C. These leakage characteristics are important when the disabled outputs connect to a shared bus because they influence how quickly a released node can be driven by another device. Typical uses include multiplexed control signals, address or data-bus isolation, interface buffering between independently timed logic sections, and general-purpose tristate fanout. The device is particularly appropriate when several outputs need to share a conductor but must not contend when inactive. It can also buffer control signals entering a wider or longer system-level bus while preserving non-inverting logic behavior. Designers should account for the truth table and polarity of both disable inputs, including their effect on output state and output polarity. Disable-control inputs should not be left floating, and external pull-up or pull-down resistors may be required where a control can enter an undefined state during power-up. When two devices drive the same shared line, only one group should be enabled at a time to prevent shoot-through current and an undefined voltage. This page combines manufacturer specifications, distributor availability, verified pin-compatible cross-references, package details, and practical selection guidance. It also distinguishes true same-package drop-in options from functional substitutes, helping engineers evaluate CD4503BE replacements without assuming that equivalent logic functions always share the same footprint.
CD4503BM - Hex Non-Inverting 3-18V Buffer | Texas Instruments
The Texas Instruments CD4503BM is a hex non-inverting CMOS buffer with three-state push-pull outputs, a 3 V to 18 V operating supply range, and two output-disable controls in a 16-SOIC package. The six buffered channels are divided into two independently disabled groups: one control disables four buffers, while the other disables the remaining two buffers. A CMOS hex buffer is a logic-family device that reproduces each input signal at its corresponding output while providing buffering and stronger output-drive capability. Within the logic hierarchy, a buffer is a logic IC, and its tri-state outputs allow a shared bus to place each channel in a high-impedance state when it is not selected. This makes the CD4503BM suitable for bus-interface and data-routing circuits that require non-inverting logic, grouped output disabling, and push-pull operation. The CD4503BM supports the manufacturer’s 5 V, 10 V, and 15 V parametric ratings and includes one TTL-load output-drive capability. Its maximum input current is specified as 1 µA at 18 V over the full package-temperature range and 100 nA at 18 V at 25°C. These characteristics are important when the buffer is powered from a 3 V to 18 V rail or interfaces with CMOS logic that requires minimal input loading. The architecture uses six non-inverting channels and two separate output-disable controls rather than one common enable. This grouped control arrangement allows four outputs to be disabled together while the other two are managed independently. The three-state outputs support high sink and source current, making the device useful where a buffer must support bus loading rather than only provide logic isolation. Typical applications include three-state data buses, control-signal distribution, multi-source digital routing, and systems requiring non-inverting buffer stages. The 16-SOIC package supports compact surface-mount layouts, while the broad 3 V to 18 V supply range accommodates industrial and embedded logic systems. Exact timing, temperature-range, and absolute-maximum details should be confirmed in the manufacturer datasheet before design release. Designers should verify the disable-control polarity and required output state during disable from the CD4503B TYPES datasheet (Rev. C). PCB layouts should preserve short logic traces, adequate supply decoupling, and unobstructed thermal paths. Because the supplied distributor data does not include complete timing curves or per-pin electrical limits, those values should not be inferred from the family description. This page consolidates verified manufacturer information, distributor availability, current pricing, pin-compatible industry references, and practical selection guidance. It also distinguishes verified facts from parameters that still require confirmation, helping engineers evaluate CD4503BM without relying on an incomplete cross-reference listing.
CD4508BD - CMOS Dual 4-Bit Latch, 5V, DIP-24
The Texas Instruments CD4508BD is a CMOS dual 4-bit bus driver/latch built around two identical 4-bit latch sections, each with independent data inputs, outputs, strobe, reset, and output-disable control. The device is specified for a nominal 5 V supply, 260 ns propagation delay, and operation with a 50 pF load capacitance, making it suitable for moderate-speed digital control and data-retention circuits. Its 24-lead through-hole DIP package supports conventional PCB insertion and prototyping workflows. What is a CMOS dual 4-bit latch? A CMOS latch is a clocked digital storage element that uses complementary MOS circuitry to capture logic states while minimizing power dissipation. The CD4508 family belongs to the logic IC hierarchy: dual 4-bit latch -> bus driver/latch -> CMOS logic -> integrated circuit. Its two latch sections can operate as independent storage channels, allowing a system to retain groups of digital signals without requiring separate single-bit latch packages. Key features include two 4-bit latch sections, separate strobe and reset controls, output-disable capability, true CMOS-compatible outputs, and a 5 V nominal supply condition. The verified product listing identifies a 260 ns propagation delay and 50 pF load capability. The CD4508B family is also described as similar to the industry MC14508 type, which helps engineers identify legacy logic families during component migration. The DIP-24 mechanical format is appropriate where through-hole assembly, socketed prototyping, or hand repair is preferred. The latch operating sequence is straightforward: when strobe is high, the corresponding D inputs can appear at Q outputs while disable is low; when strobe transitions low, the presented data is latched. A high reset level forces the outputs to the reset state defined by the device logic. Output disable provides a way to place the outputs in a high-impedance condition when multiple bus sections share a signal path, provided the system respects the device's enable and timing requirements. Typical applications include microcontroller and microprocessor data buffering, peripheral interface isolation, bus transient holding, digital test equipment, and legacy CMOS control systems. The device is most appropriate where the signal rate is moderate and a 5 V CMOS environment is available. Its DIP-24 package also makes it convenient for educational prototypes, repair boards, and systems assembled with through-hole components. When designing around the CD4508BD, verify every strobe, reset, and disable signal against the datasheet truth table and timing diagrams. Keep unused inputs at defined logic levels, provide adequate decoupling close to the supply pins, and account for the 260 ns propagation-delay figure when designing synchronous handshakes. Because the supplied data does not include complete electrical limits or a complete pin map, those details should be confirmed in the manufacturer datasheet before production release. This page combines verified manufacturer and distributor information with a practical interpretation of the latch function, timing, package, and design implications. It also distinguishes verified CD4508BD information from parameters that remain datasheet-dependent rather than guessing missing values.
CD4511B - BCD-to-7-Segment Latch Decoder Driver | Texas Instruments
The CD4511B is a CMOS BCD-to-7-segment latch decoder driver from Texas Instruments, designed to convert binary-coded decimal (BCD) inputs into signals that drive common-cathode 7-segment LED displays. It combines the low quiescent power dissipation and high noise immunity of RCA CMOS technology with n-p-n bipolar output transistors capable of sourcing up to 25 mA per segment. This allows direct driving of LEDs without additional current buffers. The device is available in multiple 16-lead packages including PDIP (E suffix), SOIC (NSR suffix), and TSSOP (PW/PWR suffixes), making it suitable for through-hole and surface-mount designs. A BCD-to-7-segment decoder is a digital combinational circuit that translates a 4-bit BCD input (0000 to 1001) into the appropriate 7-segment display code (a-g). It is a fundamental building block in digital display systems, converting binary data into human-readable numeric output. The CD4511B belongs to the CD4000 series of CMOS logic ICs, which are known for wide supply voltage operation (3V to 18V), low power consumption, and high noise immunity. This decoder sits between a counter or microcontroller and the display, simplifying the interface and reducing the number of I/O pins required. Key features of the CD4511B include lamp test (LT), blanking (BL), and latch enable (LE) inputs. The lamp test input forces all segments on to verify display functionality. The blanking input can shut off the display or be used for intensity modulation via pulse-width modulation. The latch enable input stores the BCD code, allowing multiplexed displays where several digits share the same decoder. The device also features an internal pull-down on the BCD inputs, ensuring a defined logic level when inputs are floating. Technically, the CD4511B is fabricated on a single monolithic structure combining CMOS logic with bipolar output transistors, a process known as BiCMOS. This architecture provides the low power consumption of CMOS with the high current drive capability of bipolar transistors. The outputs are active-high and can source 25 mA, sufficient for driving standard LEDs with appropriate current-limiting resistors. The device operates over a supply voltage range of 3V to 18V, with a typical quiescent current of only 80 µA at 5V, making it suitable for battery-powered applications. Typical applications include digital clocks, frequency counters, digital voltmeters, and any system requiring numeric display. The CD4511B is often used with 7-segment LED displays in instrumentation, consumer electronics, and industrial control panels. Its ability to latch data makes it ideal for multiplexed display systems, reducing the number of decoder ICs needed. When designing with the CD4511B, ensure that the supply voltage is within the specified range and that current-limiting resistors are placed in series with each segment to prevent excessive current. The blanking input can be used for brightness control by applying a PWM signal. For multiplexed displays, the latch enable input should be pulsed after the BCD data is stable to avoid display flicker.
CD4520BD - 4-Bit Binary Up Counter | Harris Corporation
The Harris Corporation CD4520BD is a CMOS dual binary up-counter with two independent 4-bit counter elements, a maximum operating frequency of 8 MHz, and operation from 3 V to 18 V in a 16-pin SOIC package. The device provides separate clock and reset inputs for each counter, allowing two counting channels to operate independently within one package. A binary counter is a sequential digital-logic component that advances its output state whenever an active clock edge occurs. The CD4520BD belongs to the CMOS counter family, which is part of the broader logic IC hierarchy: counter → digital counter → sequential logic → logic IC → integrated circuit. Each 4-bit section can represent 16 binary states and may also be configured for divide-by-two operation according to the manufacturer documentation. Key verified characteristics include a 3 V to 18 V supply range, an 8 MHz maximum frequency, 80 ns timing, and positive-edge clock triggering. The bidirectional output capability allows the counter state to be observed from either the Q or complementary Q output. These features make the IC useful when a design requires repeatable binary sequencing, frequency division, timing generation, or event counting. The CD4520BD is implemented as a CMOS logic device, providing a practical combination of low power consumption and wide supply-voltage operation. Its operating range permits use in 5 V and higher-voltage logic systems where additional input or output voltage range is useful. The 16-pin SOIC package also supports conventional surface-mount assembly rather than requiring a through-hole footprint. Typical uses include divide-by-two clock conditioning, programmable digital timers, sequence generators, phase-delay counters, and general-purpose binary event-counting circuits. Two counter sections in one package can reduce board area when a design needs more than one independent counting channel and the required clock and reset arrangements match the device architecture. Designers should verify clock-edge behavior, reset polarity, output-drive requirements, and unused-input states against the manufacturer datasheet before layout. The 80 ns timing and 8 MHz frequency figures establish the device’s logic-speed context, but external signal fan-out, propagation delay, wiring, and supply level remain important when defining a complete operating point. This page consolidates the verified manufacturer and distributor information for CD4520BD, provides practical application guidance, records the available 3 V to 18 V and 8 MHz operating limits, and distinguishes verified drop-in evidence from substitute parts that could not be confirmed as pin-compatible.
CD4521BM - CMOS 24-Stage Frequency Divider | Texas Instruments
The Texas Instruments CD4521BM is a CMOS 24-stage frequency divider with oscillator support, supplied in a 16-pin Small Outline Integrated Circuit package. It combines an oscillator section with 24 ripple-carry binary counter stages, allowing an external RC or crystal oscillator to drive a programmable binary count sequence. The available device information identifies a 24-bit division structure, a CD4000-series CMOS logic family, and an operating temperature range of -55°C to +125°C. A high signal on RESET forces the counter into its all-zero state and disables the oscillator, while counting advances on the negative transition of IN1. A CMOS frequency divider is a type of sequential logic IC that divides an input clock by a fixed binary factor. In the broader semiconductor hierarchy, it belongs to counters and dividers, then logic ICs, and ultimately the wider digital semiconductor category. The CD4521BM is useful when a system needs long division ratios, a generated clock, or a cascaded timing chain without implementing the counter in a microcontroller or discrete flip-flop array. Its oscillator and counter sections provide a dedicated hardware function for timing and sequencing. The key verified characteristics include a 24-stage ripple-carry counter, 16-pin SOIC packaging, a -55°C to +125°C temperature range, and a 3 V minimum operating voltage as shown in the available cross-reference information. The counter is advanced on the negative transition of IN1, while RESET returns the state to all zeros and disables the oscillator. These characteristics make the device suitable for long-period timers, modulo counters, clock dividers, and low-frequency signal generation. The manufacturer identifies the circuit as a CMOS 24-stage frequency divider in its CD4521B product documentation. Because the oscillator can be configured with either RC or crystal components, the circuit supports a range of timing approaches. An unused oscillator input must be tied either HIGH or LOW, preventing an undefined input state. RESET provides a deterministic starting condition, and the multiple counter outputs allow different division ratios or timing phases to be observed. This architecture is particularly useful when one input frequency must be converted into several related output frequencies without continuous software intervention. The CD4521BM is supplied by Texas Instruments in a 16-pin SOIC package. The manufacturer product page provides the CD4521B family data sheet, while distributor records identify the CD4521BM ordering variant, tube packaging, and availability information. Its broad temperature rating supports industrial and instrumentation use, although designers must still verify the complete electrical limits, timing characteristics, and output-drive requirements in the manufacturer data sheet before release. For oscillator-based designs, calculate the RC or crystal timing network from the manufacturer guidance and keep oscillator traces short and away from noisy switching nodes. For externally clocked designs, ensure that IN1 transitions satisfy the specified negative-edge counting requirement and that unused inputs are tied to defined logic levels. RESET can be used during power sequencing to hold the divider in a known state until the surrounding system is ready. This product data combines manufacturer-family information, distributor specifications, verified pricing references, cross-reference results, and practical implementation guidance. It also distinguishes genuine same-package substitutes from unspecified or cross-package alternatives so engineers can evaluate replacement decisions without relying on unsupported equivalence claims.
CD4522BM - 4-Bit Programmable BCD Counter | Texas Instruments
The Texas Instruments CD4522BM is a CMOS programmable BCD divide-by-N counter with one 4-bit counting element, a 16-pin SOIC package, and operation across a 3 V to 18 V supply range. The device provides a decoded zero-state output for divide-by-N designs and supports cascade feedback for implementing higher divide ratios across multiple stages. According to the verified Texas Instruments product data, it operates from -55 °C to +125 °C and is intended for both positive and negative clock-edge counting functions. A BCD divide-by-N counter is a digital logic IC that counts in binary-coded decimal and generates a terminal-count indication after a selected number of input transitions. In the broader semiconductor hierarchy, this function belongs to counters and dividers, then to logic ICs, digital semiconductors, and programmable CMOS devices. The CD4522B family is useful where a system must divide a clock into programmable decade-based intervals without requiring a microprocessor or programmable logic device. The internally synchronous counter architecture supports high internal and external operating speeds, while the logic-edge-clocked design increments on a positive Clock transition or on a negative Clock Inhibit transition. A decoded zero-state output simplifies the end-of-count detection normally required by divide-by-N systems. The verified manufacturer material also states that the device is 100% tested for quiescent current at 20 V and receives parametric testing at 5 V, 10 V, and 15 V, providing useful production-control coverage across common CMOS operating points. The programmable divide count is configured through the counter's control inputs, while cascade feedback permits multiple counter sections to implement larger division ratios. This architecture reduces the external logic needed for timing dividers, periodic-event generators, sequence counters, and clock-staging circuits. Exact propagation-delay and maximum-frequency limits were not present in the supplied verified snippets and should therefore be confirmed in the manufacturer datasheet before relying on timing margins. Typical applications include decade counters, programmable frequency dividers, industrial timing modules, digital clock generation, pulse-rate counting, and multistage cascaded division systems. The CD4522BM is particularly appropriate when a fixed, reliable CMOS counter is preferred over software timing, especially where the final count must be electrically programmable rather than fixed in firmware. Designers should connect the decoded zero output and preset-enable functions according to the intended single-stage or cascade configuration, and should account for supply-voltage-dependent propagation delay in high-speed clock trees. Decoupling capacitors should be placed close to the power and ground pins, while unused inputs must be held at a defined logic level rather than left floating. This page consolidates verified manufacturer and distributor information, package details, sourcing links, strict drop-in candidates, and practical design guidance. It distinguishes documented characteristics from parameters that still require confirmation from the full CD4522B datasheet, helping engineers make a defensible sourcing and design decision.
CD4585BD - 4-Bit Magnitude Comparator | Texas Instruments
The Texas Instruments CD4585BD is a 4-bit CMOS magnitude comparator with eight comparison inputs, three active-high outputs, and three cascading inputs, operating from 3 V to 18 V in a 16-pin CDIP package. It compares two binary or BCD words and indicates whether A is less than, equal to, or greater than B. A magnitude comparator is a combinational logic device that examines corresponding bits of two multi-bit operands and produces an ordering result. The CD4585BD belongs to the CMOS logic family, where CMOS means complementary metal-oxide-semiconductor. Its hierarchy extends from a digital comparator IC to a logic IC, integrated circuit, and semiconductor. The device is useful whenever a system must determine the relationship between two numerical values without relying on a processor. The CD4585BD supports supply voltages from 3 V to 18 V, operates across a military temperature range of -55 °C to +125 °C, and provides a 160 ns propagation delay at 15 V with a 50 pF load. Its active-high A<B, A=B, and A>B outputs report the comparison result directly. The specified 100 µA supply current supports low-power logic designs, while the 6.8 mA output-current figure defines the available output drive in the cited product data. Cascading inputs extend the comparison to more than four bits. The equal, greater-than, and less-than cascade paths allow multiple CD4585 devices to compare two larger words. Designers must connect unused inputs to defined logic levels and account for propagation delay through each cascade stage when evaluating system timing. Typical uses include digital sorting and ranking, address and threshold comparison, BCD arithmetic control, test-equipment decision logic, industrial control sequencing, and embedded systems that require a hardware ordering function. Its military temperature range and through-hole CDIP-16 package also make it suitable for legacy and ruggedized equipment where surface-mount alternatives are unsuitable. For reliable operation, keep every supply pin within the 3 V to 18 V range and use the manufacturer's recommended operating conditions. Decoupling capacitors should be placed close to the supply pins, while all digital inputs should remain driven to valid CMOS levels. Propagation-delay accumulation and output contention require particular attention when several devices are cascaded. This page consolidates the verified distributor specifications, pricing context, a same-family drop-in assessment, and practical implementation guidance. It also separates documented electrical values from unavailable parameters rather than filling gaps with estimated or invented specifications.
CD4585BE - 4-Bit CMOS Magnitude Comparator | TI
The Texas Instruments CD4585BE is a 4-bit CMOS magnitude comparator that compares two 4-bit binary or BCD words and reports whether the first word is less than, equal to, or greater than the second word. It accepts eight comparison inputs, provides three active-high result outputs, and includes three cascading inputs. The device operates from 3 V to 18 V and is supplied in a 16-pin PDIP package, with a specified temperature range of -55 °C to 125 °C. A magnitude comparator is a logic IC within the broader CMOS comparator category. Its purpose is to evaluate the relative magnitude of two multi-bit values and produce a corresponding digital result. The CD4585B supports binary and BCD data, making it useful in computer-control, digital arithmetic, threshold-detection, sorting, and industrial automation systems. Its three cascading inputs allow designers to extend comparisons beyond four bits by connecting multiple devices. The principal features include eight 4-bit comparison inputs, three active-high outputs labeled A<B, A=B, and A>B, and a wide 3 V to 18 V supply range. The wide operating voltage is useful when a system uses a supply above the typical 5 V logic range. The specified -55 °C to 125 °C temperature range provides broad environmental capability, while CMOS operation places the device in the low-power CD4000 logic family. The CD4585B compares each corresponding bit of the two input words and propagates the most significant comparison result toward the lower-order bits. This internal structure produces three mutually related outputs rather than one combined result. Cascading inputs permit a higher-order device to accept the comparison state generated by a lower-order device, enabling comparison of wider binary or BCD values without redesigning the basic logic function. Typical applications include digital counters, threshold and limit detectors, arithmetic control, industrial sequence control, sorting logic, and embedded decision systems. It can compare a measured or represented value against a reference word and indicate whether the value is below, equal to, or above the configured limit. The BCD capability also supports decimal display and control systems where encoded ten-state values are more convenient than binary values. When designing around the CD4585BE, verify unused inputs so that no CMOS input remains floating. Place supply-bypass capacitance close to the device and route output signals away from noisy analog or switching nodes. Because the part is a through-hole PDIP device, it is particularly suitable for prototypes, educational systems, legacy industrial equipment, and new designs that specifically retain a 16-pin through-hole footprint. This page combines manufacturer information, distributor availability, package details, related comparator references, and engineering-oriented comparison data. It also identifies where verified technical values are unavailable so procurement and design decisions can be made without confusing incomplete cross-reference information with a guaranteed drop-in replacement.
CD74AC151M96 - 8-Input Multiplexer, 16-SOIC | Texas Instruments
The Texas Instruments CD74AC151M96 is a high-speed 8-input digital multiplexer fabricated in the AC (Advanced CMOS) logic family, delivered in a 16-pin SOIC (D) surface-mount package with Tape and Reel packing (-96 suffix). It selects one of eight data inputs (D0-D7) under control of three select lines (A, B, C) and drives both a true output (Y) and a complementary output (W), with an active-low enable (G) input that forces both outputs low when asserted. A multiplexer (MUX) is a combinational logic device that routes one of several input signals to a single output line, forming a key element in the hierarchy of digital logic ICs: MUX -> combinational logic -> logic IC -> semiconductor. Multiplexers perform parallel-to-serial conversion, data source selection, and Boolean function generation of up to four variables in a single package. Key features include operation from 1.5V to 5.5V supply per the AC family specification, balanced noise immunity of 30% of the supply voltage, and propagation delays as low as 5.5 ns at 5V - speed comparable to bipolar F, AS, and S logic families with CMOS low static power consumption. Outputs source or sink up to 24 mA, enabling direct drive of substantial fan-out loads. The advanced CMOS process delivers high noise immunity and low quiescent dissipation, with TTL-level input compatibility at 5V operation. Balanced propagation and transition times minimize output skew in high-speed systems. The wide -55C to +125C operating range of this package supports industrial and military-temperature designs. Typical applications include microprocessor data routing, parallel-to-serial converters, Boolean function generators, communication channel selection, and test-equipment signal switching, where the complementary W output eliminates the need for an external inverter. Design tip: properly terminate the enable and select lines to avoid undefined states, and use a pull-up or pull-down resistor on Y/W when the device may be disabled. Account for input capacitance when routing high-speed signals. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CD74AC151QM96Q1 - 8:1 Mux, AEC-Q100 | Texas Instruments
The Texas Instruments CD74AC151QM96Q1 is an automotive-grade (AEC-Q100 qualified) 8-line to 1-line data selector/multiplexer in a 16-pin SOIC (M) package. It belongs to the CD74AC Advanced CMOS logic family, which supports operation from 1.5 V to 5.5 V with balanced noise immunity of 30% of the supply voltage. The device selects one of eight data sources under control of a 3-bit address and provides both true (Y) and complementary (W) outputs with a strobe/enable input. A digital multiplexer is a combinational logic circuit that forwards one of several input signals to a single output line, selected by binary control address inputs. In the logic IC hierarchy, the multiplexer sits under combinational logic > data routing ICs within the broader category of 4000/7400-family digital logic. Multiplexers can also act as Boolean function generators of up to four variables, parallel-to-serial converters, and data source selectors. Key features include 8:1 selection with complementary outputs, high-speed AC-family switching comparable to bipolar F, AS, and S speed classes, operation up to 5.5 V, and balanced CMOS noise immunity. The Q1 suffix denotes AEC-Q100 qualification, making the part suitable for automotive and harsh-environment designs where temperature cycling, ESD robustness, and quality requirements exceed commercial grades. The CD74AC151 uses advanced CMOS technology for low static power consumption combined with fast propagation delays, making it appropriate for address decoding, sensor-source selection, and data-routing in automotive ECUs, industrial control modules, and instrumentation front ends. Typical applications include automotive body and powertrain control modules selecting among sensor channels, parallel-to-serial data conversion in microcontroller-based systems, and universal logic-function generation in FPGA glue logic and test equipment. Design tip: tie the strobe (active-low enable) low for continuous selection, and keep unused data inputs at defined logic levels to prevent floating CMOS inputs that increase supply noise and current.
CD74ACT163 - 4-Bit Sync Binary Counter 5V | Texas Instruments
The Texas Instruments CD74ACT163 is a 4-bit synchronous presettable binary counter with synchronous reset, fabricated in the advanced CMOS (ACT) logic family and housed in a 16-pin SOIC package. It operates from a 5V supply with TTL-voltage-compatible inputs, and features an internal carry look-ahead for high-speed counting designs plus a ripple carry output (RCO) for n-bit cascading. A synchronous binary counter is a sequential logic IC in which all flip-flops are clocked simultaneously by a common clock edge, so all output bits change in coincidence rather than rippling stage to stage. Within the logic IC hierarchy (counter -> sequential logic IC -> digital IC), synchronous counters eliminate the cumulative propagation delays of ripple (asynchronous) counters, enabling reliable high-speed counting and glitch-free decoded outputs. Key features include synchronous counting, synchronous parallel load via the active-low LOAD input for programmable counting, and synchronous reset (CLR) that clears all outputs on the next clock edge, eliminating the decoding spikes inherent in asynchronous clearing. The count-enable inputs (ENP, ENT) permit cascading and gated counting without external gating logic, and the RCO terminal supports direct n-bit cascading. The ACT technology combines CMOS low static power with TTL input thresholds at 5V operation, making the device directly interchangeable in TTL 74163 sockets. Positive-edge clocking and fully synchronous preset, count, and clear functions simplify timing analysis in multi-stage counter chains. Typical applications include frequency division, digital timers, event counting, address generation, industrial sequencing, and cascaded n-bit counters built by wiring RCO of one stage to ENT of the next. Design consideration: because reset and load are synchronous, hold CLR or LOAD low for at least one full clock period; for asynchronous-reset designs use the related CD74ACT161 instead. Decouple the 5V rail with 0.1uF close to the VCC pin. This page synthesizes distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CD74HC138 - 3-to-8 Line Decoder/Demux 2-6V | Texas Instruments
The Texas Instruments CD74HC138 is a high-speed silicon-gate CMOS 3-to-8 line decoder/demultiplexer with inverting outputs, supplied in a 16-pin package (PDIP, SOIC, and other variants), operating from a 2V to 6V supply with three binary select inputs and eight active-low outputs. According to the TI datasheet SCHS147J, the device is well suited to memory address decoding or data routing applications. A decoder/demultiplexer is a combinational logic device in the broader logic IC family (logic -> decoder -> demultiplexer -> data routing IC). Decoders convert binary-coded inputs into one-hot outputs, while the same circuit used with enables asserted acts as a demultiplexer routing data to one of eight output lines. The CD74HC138 belongs to TI's High Speed CMOS (HC) logic family, offering CMOS low power with LSTTL-comparable speed. Key features include three binary select inputs (A0, A1, A2) with full on-chip decoding, three enable inputs (two active-low, one active-high) supporting cascaded 4-to-16 or larger decoders without external gates, eight active-low outputs suited to memory chip-select (CS) and enable lines, low quiescent CMOS power consumption, and wide 2V to 6V supply operation typical of the HC family. Architecturally, the CD74HC138 uses high-speed silicon-gate CMOS construction with speeds comparable to low-power Schottky TTL logic. When used as a demultiplexer, the active-low enables serve as the data input while the select inputs route the data to the addressed output, eliminating external inverter gates. Typical applications include memory address decoding for SRAM/EPROM/Flash chip selects, I/O port expansion in microprocessor systems, data routing and demultiplexing, and address latching in embedded control systems. Its inverting outputs directly drive active-low memory CS/CE inputs without external inverters. Design tip: tie unused enable inputs to their inactive levels and keep select lines short; for 4-to-16 decoding, cascade two devices using one enable as the MSB select. Verify AC timing at your supply voltage and load. This page synthesizes distributor pricing, drop-in alternatives, cross-reference data, and practical design notes not found in the manufacturer datasheet.
CD74HC374 - Octal D Flip-Flop, 3-State, 2-6V | Texas Instruments
The Texas Instruments CD74HC374 is a high-speed CMOS logic octal positive-edge-triggered D-type flip-flop with 3-state outputs, housed in a 20-pin package (PDIP-20 (N), SOIC-20 (DW), or TSSOP-20 (PW)). It operates from a wide 2V to 6V supply and each output can drive up to 15 LSTTL loads, making it a robust bus-oriented storage element. An octal D-type flip-flop is a sequential logic IC containing eight independent D flip-flops that share a common clock and output-enable control. It belongs to the 74HC (High-speed CMOS) logic family, which combines LSTTL-compatible speed with the low static power consumption of CMOS technology, sitting within the broader hierarchy of digital logic ICs > flip-flops > edge-triggered registers. Key features include positive-edge-triggered data capture on the LOW-to-HIGH clock (CP) transition, 3-state outputs controlled by an active-low output enable (OE) that is independent of register operation, a typical propagation delay of 15 ns at 5V, and a maximum clock frequency of 30 MHz. The silicon-gate CMOS process provides high noise immunity and very low quiescent current compared with bipolar LSTTL equivalents. Architecturally, data present on the D inputs is stored on each rising clock edge, while OE=HIGH forces all Q outputs into a high-impedance state without disturbing the stored register contents. This enables bus multiplexing, shared data buses, and bidirectional data flow in microprocessor and memory systems. The device works in both 3.3V and 5V logic systems thanks to its wide supply range. Typical applications include microprocessor address and data latching, I/O port expansion, bus interfacing, register files, and synchronization stages in DSP and communication interfaces. Designers should keep the clock clean and glitch-free, control OE to avoid bus contention, and place 100 nF decoupling capacitors close to the VCC pin. According to TI datasheet SCHS183A, unused inputs must never be left floating. This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone.
CD74HC4511M96 - CMOS BCD-to-7-Segment Decoder/Driver SOIC-16 | TI
The Texas Instruments CD74HC4511M96 is a High Speed CMOS Logic BCD-to-7-Segment Latch/Decoder/Driver supplied in a 16-pin SOIC (D) package on tape and reel (M96 suffix). It operates over a 2 V to 6 V VCC range for the HC version, decodes four BCD address inputs (D0-D3) into seven segment outputs (a-g) plus ripple blanking, and integrates input latches, lamp-test (LT), and active-low blanking (BL) control inputs. Per the TI product page, the part delivers 10 mA source current per segment at 6 V on the HC variant, sufficient to directly drive common-cathode LED displays with external current-limiting resistors. A BCD-to-7-segment decoder is a logic IC that converts a 4-bit Binary Coded Decimal input (0-9) into the seven individual segment drive signals (a, b, c, d, e, f, g) needed to display a decimal digit on a 7-segment LED or LCD display. These devices sit in the logic IC hierarchy: decoder/driver -> display driver -> logic IC -> integrated circuit -> semiconductor. They are essential building blocks in numeric displays used in instrumentation, appliance panels, industrial counters, and embedded systems where a microcontroller must drive multi-digit readouts efficiently. Key features of the CD74HC4511M96 include input latches for BCD code storage, allowing data to be held stable while multiplexing multiple digits; lamp-test and blanking capability for testing all segments simultaneously and for PWM-based dimming; balanced propagation delays and transition times; and significant power reduction versus the original CD4000-series CMOS designs. The high-output sourcing capability (10 mA at 6 V) eliminates the need for external segment drivers in most LED display applications. The CD74HC4511M96 uses CMOS technology with CMOS-compatible inputs on the HC variant. Its 16-pin SOIC (D) small-outline surface-mount package measures approximately 9.9 mm x 3.9 mm with a 1.27 mm pin pitch, making it well-suited to compact PCB layouts. The integrated latch enables display multiplexing with no external storage, simplifying firmware and reducing microcontroller pin count when several digits share a data bus. Typical applications include digital panel meters, instrument counters, industrial control readouts, appliance displays (microwave ovens, washing machines), electronic scoreboards, point-of-sale terminals, and any embedded system that needs to display decimal digits on a 7-segment LED or LCD. Designers use it when they need a hardware decoder to offload display refresh from a microcontroller or when supporting multi-digit multiplexing without continuous MCU intervention. When designing with this device, add series resistors between each segment output and the LED anodes to limit current, or use a constant-current driver if brightness uniformity is critical. For multi-digit multiplexing, route BL through a PWM signal or high-frequency oscillator to achieve dimming and ghosting reduction. The LE (Latch Enable) input must be low for transparent operation and high to store the BCD code. The 'M96' suffix indicates tape-and-reel packaging for high-volume assembly. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found on any single distributor listing, giving engineers a one-stop reference for selecting and using the CD74HC4511M96 in new designs and as a drop-in replacement.