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Nexperia USA Inc. 74HCT112PW,112
- Part No.:
- 74HCT112PW,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT112PW,112.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,219
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Product details
Overview
74HCT112PW,112 from Nexperia is a dual negative-edge-triggered JK flip-flop with asynchronous active-LOW set (nSD) and reset (nRD), complementary Q/nQ outputs per section, TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), and operation across -40 °C to +125 °C. It enables precise state control in synchronous digital systems such as address latching, serial-to-parallel conversion, and clock-domain synchronization.
For engineers reviewing the 74HCT112PW,112 datasheet, 74HCT112PW,112 pinout, 74HCT112PW,112 application, or 74HCT112PW,112 equivalent, this page delivers verified functional behavior, JEDEC-compliant timing (tpd ≤ 53 ns at VCC = 4.5 V), TSSOP16 package dimensions, real-world toggle/hold/set/reset mode operation, and direct substitution guidance for industrial logic design.
Technical Context
This device implements two independent edge-triggered JK flip-flops sharing no internal coupling-each with dedicated J, K, nCP, nSD, nRD, Q, and nQ terminals. The negative-edge clock (nCP) triggers state transitions only on HIGH-to-LOW transitions, while nSD and nRD override clock action asynchronously with priority over all other inputs.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Schmitt-trigger action on nCP ensures robust operation with slow-rising/falling clocks, and TTL-level input compatibility eliminates level-shifting requirements in mixed-logic 5 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input thresholds, CMOS output drive |
| Operating Voltage | 4.5 V to 5.5 V - Matches standard 5 V supply rails without regulation |
| Propagation Delay (tpd) | 21 ns to 53 ns - Enables reliable operation up to 24 MHz at -40 °C to +85 °C |
| Output Drive | ±4 mA at VCC = 4.5 V - Sufficient to drive 10 LS-TTL loads or 20 CMOS inputs |
| Temperature Range | -40 °C to +125 °C - Qualified for extended industrial and under-hood applications |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Robust handling during PCB assembly and field service |
| Power Dissipation | CPD = 30 pF - Predictable dynamic power calculation: PD = CPD × VCC² × fi × N |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1); 16-pin, 4.4 mm body width, 0.65 mm lead pitch; surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 (nCP) | Clock input (dual) | Negative-edge trigger: state changes occur only on HIGH-to-LOW transition |
| 2, 12 (nK) | Data input K (dual) | Controls toggle/reset behavior when clocked; stable ≥16 ns before nCP edge |
| 3, 11 (nJ) | Data input J (dual) | Controls toggle/set behavior when clocked; same setup requirement as nK |
| 4, 10 (nSD) | Asynchronous set (active LOW, dual) | Forces Q = HIGH / nQ = LOW immediately, overriding clock and J/K |
| 5, 9 (nQ) | True output (dual) | Complementary to nQ; fan-out rated for 10 LS-TTL or 20 CMOS loads |
| 6, 7 (nQ) | Inverted output (dual) | Provides logical complement without external inverter; matched delay to nQ |
| 8 | GND | Reference ground for all I/O and supply; requires low-inductance PCB connection |
| 14, 15 (nRD) | Asynchronous reset (active LOW, dual) | Forces Q = LOW / nQ = HIGH immediately, overriding clock and J/K |
| 16 | VCC | Positive supply (4.5–5.5 V); bypass capacitor (100 nF) required near pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V - Direct interface with legacy 5 V microcontrollers and peripherals |
| Asynchronous control | nSD/nRD operate independently of nCP - Enables immediate state initialization or fault recovery without waiting for clock edge |
| Schmitt-trigger clock input | hysteresis on nCP - Accepts slow or noisy clock edges (e.g., RC-generated clocks) without metastability |
| Clamped inputs | Integrated diodes to VCC/GND - Permits safe connection to signals up to VCC + 0.5 V using series resistors |
| Wide temperature range | Specified from -40 °C to +125 °C - Validated for use in motor control, power supplies, and industrial PLC modules |
Applications
| Industrial Control Logic | Serial Data Synchronization |
|---|---|
Use Scenario: Latching sensor status in programmable logic controllers where deterministic state capture on clock edge is required. IC Role / Device Role / Timing Role: Dual JK flip-flop acts as synchronized register for two independent binary inputs (e.g., limit switch states), with nSD/nRD enabling emergency reset or preset. Use Value: Guarantees single-cycle registration with no race conditions; asynchronous reset allows immediate fault clearing without CPU intervention. |
Use Scenario: Converting serial UART data streams into parallel byte format for microcontroller input buffers. IC Role / Device Role / Timing Role: Each JK section captures one bit per clock cycle; J=K=1 configures toggle mode for bit-position counting, while Q/nQ outputs feed shift-register stages. Use Value: Eliminates need for external inverters or additional logic gates; complementary outputs simplify bus driving and signal inversion. |
| Digital Test Equipment | Legacy System Interfacing |
Use Scenario: Generating precise test patterns in automated test fixtures requiring repeatable, edge-aligned stimulus sequences. IC Role / Device Role / Timing Role: Configured in toggle mode (J=K=1) to divide master clock by 2; Q outputs drive subsequent logic stages with known phase relationship. Use Value: Propagation delay variation ≤ 5 ns across temperature ensures sub-20 ns timing margin at 24 MHz operation. |
Use Scenario: Bridging 5 V TTL logic families (e.g., 74LS) with modern 5 V CMOS microcontrollers lacking native TTL input thresholds. IC Role / Device Role / Timing Role: Provides level-adapted storage element: accepts LS-compatible inputs directly and drives CMOS loads with rail-to-rail swing. Use Value: Removes need for discrete level translators; reduces BOM count and board area in retrofitted instrumentation designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JK flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC112PW,112 | CMOS input thresholds (VIH = 3.15 V min at VCC = 4.5 V); higher noise immunity but incompatible with TTL sources | Requires clean 5 V CMOS-level drivers; unsuitable for direct connection to 74LS outputs | Select when system uses only HC-family logic or when higher noise margin is critical |
| SN74LS112N | Bipolar TTL technology; VIH = 2.0 V, VIL = 0.8 V same as HCT, but ICC = 16 mA typical vs. 4 μA for HCT | Higher power draw and heat generation; limited to commercial temperature range (0 °C to +70 °C) | Select only for legacy board replacements where pinout and timing match exactly and thermal budget permits |
Compared with 74HC112PW,112, the 74HCT112PW,112 offers TTL input compatibility essential for mixed-logic systems, while SN74LS112N provides identical logic function but with significantly higher static power and narrower temperature tolerance-making it unsuitable for new industrial designs.
Availability
74HCT112PW,112 is available at Aetrix Electronics and suitable for industrial control logic, serial data synchronization, digital test equipment, and legacy system interfacing requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74HCT112PW,112 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 delivering high-performance, reliable logic, analog, and discrete components optimized for efficiency and miniaturization in industrial, automotive, and consumer applications.
The 74HCT112 belongs to Nexperia's 74HCT logic family-designed specifically to provide TTL-compatible input levels with CMOS power efficiency and wide temperature operation for robust interoperability in mixed-signal systems.
FAQ
Can 74HCT112PW,112 operate reliably at 3.3 V?
No. The 74HCT112PW,112 is specified only for 4.5 V to 5.5 V operation. At 3.3 V, input thresholds fall outside specification (VIH min = 2.0 V requires ≥4.5 V VCC per JEDEC 7A), and propagation delays increase unpredictably. Use 74LVC112 or 74AUP1G112 for 3.3 V systems.
What happens if both nSD and nRD go LOW simultaneously?
When nSD and nRD are both asserted LOW, the outputs enter an undefined state per the datasheet's functional description. The next valid clock edge or release of either control input determines final Q/nQ values-designs must avoid this condition using external gating or priority encoding.
Is the TSSOP16 package RoHS-compliant and lead-free?
Yes. The 74HCT112PW,112 in SOT403-1 (TSSOP16) packaging meets RoHS Directive 2011/65/EU and is lead-free, with matte tin (Sn) termination and halogen-free molding compound, as confirmed in Nexperia's official compliance documentation.
How does the Schmitt-trigger on nCP improve system reliability?
The Schmitt-trigger input on nCP provides hysteresis (typically 0.4 V at VCC = 5 V), preventing multiple clock transitions from slow-rising or noisy signals. This eliminates false triggering in environments with EMI, long traces, or RC-filtered clocks-critical in motor drives and factory automation.
74HCT112PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- JK Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 64 MHz
- Max Propagation Delay @ V, Max CL:
- 35ns @ 4.5V, 50pF
- Trigger Type:
- Negative Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HCT112PW,112 FAQ
1.How can I place an order for 74HCT112PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT112PW,112 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 74HCT112PW,112 reliable?
The price and inventory of 74HCT112PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT112PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT112PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT112PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT112PW,112?
74HCT112PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT112PW,112 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 74HCT112PW,112?
For technical support, including 74HCT112PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT112PW,112 requirements.
6.How does Aetrix verify that 74HCT112PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT112PW,112 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 74HCT112PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT112PW,112?
All 74HCT112PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT112PW,112, 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 74HCT112PW,112 part is unused and in its original packaging.
Return procedure for 74HCT112PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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