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Nexperia USA Inc. 74HCT112PW,118
- Part No.:
- 74HCT112PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT112PW,118.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,218
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Product details
Overview
74HCT112PW,118 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 over -40 °C to +125 °C. It enables precise state control in synchronous digital systems such as clock dividers, counters, and data latches.
For engineers reviewing the 74HCT112PW,118 datasheet, 74HCT112PW,118 pinout, 74HCT112PW,118 application, or 74HCT112PW,118 equivalent, this device supports deterministic edge-triggered state transitions, robust noise immunity via Schmitt-trigger clock input, and interoperability with legacy TTL logic families in industrial control and instrumentation designs.
Technical Context
The 74HCT112PW,118 implements two independent JK flip-flops sharing no internal coupling; each features separate J, K, clock (nCP), set (nSD), and reset (nRD) inputs plus true (nQ) and complement (nQ) outputs. Its negative-edge triggering requires stable J/K inputs one setup time (16 ns min at VCC = 4.5 V) before the HIGH-to-LOW clock transition.
Asynchronous nSD and nRD override clock action and operate independently-asserting both simultaneously yields undefined output states. Input clamp diodes allow safe interfacing to voltages exceeding VCC, while Schmitt-trigger action on nCP tolerates slow rise/fall times without metastability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible input levels, CMOS output drive |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial environments |
| Propagation Delay (nCP → nQ) | 21 ns typ / 53 ns max at VCC = 4.5 V, CL = 50 pF - determines maximum synchronous timing margin |
| Maximum Clock Frequency | 64 MHz typ at VCC = 4.5 V, CL = 15 pF - supports high-speed counter/divider applications |
| Input Voltage Thresholds | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V - ensures reliable interfacing with standard 5 V TTL outputs |
| Output Drive Capability | ±4.0 mA at VOH/VOL - sufficient to drive 10 LSTTL loads or moderate capacitive loads |
| Power Dissipation Capacitance | CPD = 30 pF - used to calculate dynamic power: 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; RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 (1CP, 2CP) | Clock input | Negative-edge triggered; HIGH-to-LOW transition initiates state evaluation |
| 2, 12 (1K, 2K) | Data input | Controls toggle/reset behavior when clocked; must be stable before clock edge |
| 3, 11 (1J, 2J) | Data input | Controls toggle/set behavior when clocked; works with K to define next state |
| 4, 10 (1SD, 2SD) | Asynchronous set | Active LOW; forces nQ = H / nQ = L immediately, overriding clock |
| 5, 9 (1Q, 2Q) | True output | Complementary to nQ; provides registered logic state for downstream logic |
| 6, 7 (1Q, 2Q) | Complement output | Provides inverted state; eliminates need for external inverters in toggle configurations |
| 8 | GND | Ground reference (0 V); required for all DC bias and signal return paths |
| 14, 15 (1RD, 2RD) | Asynchronous reset | Active LOW; forces nQ = L / nQ = H immediately, overriding clock |
| 16 | VCC | Positive supply (4.5–5.5 V); powers internal CMOS circuitry and defines logic thresholds |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 5 V - enables direct connection to 5 V TTL without level shifters |
| Schmitt-trigger clock input | Hysteresis on nCP - rejects noise and accommodates slow-rising clock signals up to 20 ns/V transition rate |
| Asynchronous set/reset | Independent nSD/nRD pins with sub-20 ns propagation (18 ns typ to nQ at VCC = 4.5 V) - enables immediate state initialization |
| Input clamp diodes | Integrated ESD protection diodes - permit safe interface to voltages beyond VCC using current-limiting resistors |
| High noise immunity | CMOS output drive with 4.0 mA sink/source and >1.2 V noise margin at VCC = 5 V - resists crosstalk in dense PCB layouts |
Applications
| Industrial PLC I/O Modules | Digital Test Equipment Control Logic |
|---|---|
Use Scenario: Latching sensor status (e.g., emergency stop, limit switch) across scan cycles in programmable logic controllers. IC Role / Device Role / Timing Role: Dual JK flip-flop acts as edge-sensitive input synchronizer and state-hold register, isolating noisy field inputs from the CPU bus. Use Value: Asynchronous reset ensures known startup state; negative-edge clock aligns sampling to system timing reference, eliminating metastability in 10–50 kHz scan loops. |
Use Scenario: Generating precise test pattern sequences (e.g., PRBS, walking 1s) in automated test equipment waveform generators. IC Role / Device Role / Timing Role: Configured as toggle or shift-register element; J=K=1 enables divide-by-2 operation synchronized to master test clock. Use Value: 64 MHz max frequency and 21 ns propagation delay support 15 ns minimum clock period, enabling sub-65 MHz deterministic pattern generation with tight skew control. |
| Motor Drive Fault Latching | Legacy System Bus Interface Logic |
Use Scenario: Capturing and holding overcurrent or thermal fault events in brushless DC motor drives until serviced by firmware. IC Role / Device Role / Timing Role: Each flip-flop monitors one phase fault signal; nSD asserts on fault, nRD clears after fault recovery confirmation. Use Value: Active-LOW asynchronous controls ensure immediate capture even during CPU reset or clock stall; TSSOP16 footprint saves space in compact gate-driver modules. |
Use Scenario: Adapting legacy 5 V TTL control signals (e.g., /WR, /RD, /CS) to modern microcontroller GPIO with mismatched voltage thresholds. IC Role / Device Role / Timing Role: Used as level-translating latch to buffer and retime wide-bus control strobes before FPGA or ASIC interface. Use Value: TTL input compatibility eliminates external translators; dual independent sections reduce component count versus discrete buffers in multi-signal interfaces. |
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 |
|---|---|---|---|
| SN74HCT112DR | SOIC-16 package (SOT109-1); same electrical specs but 3.9 mm body width and 1.27 mm pitch | Preferred where board-level rework or hand-soldering is required; less dense than TSSOP | Select for legacy PCB compatibility or manual assembly; avoid if space-constrained or high-density routing needed |
| 74AHC112PW,118 | Higher speed (tPD = 15 ns typ), wider VCC range (2–5.5 V), CMOS input thresholds (VIH = 3.15 V min at VCC = 4.5 V) | Requires level-shifting when interfacing with 5 V TTL; better suited for mixed-voltage or battery-powered systems | Choose only when higher speed or lower VCC operation is mandatory; not drop-in compatible with TTL sources |
Compared with SN74HCT112DR, the 74HCT112PW,118 offers 30 % smaller footprint and improved thermal resistance; versus 74AHC112PW,118, it maintains guaranteed TTL interoperability at 5 V but trades 10 ns propagation delay for robustness in legacy system integration.
Availability
74HCT112PW,118 is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, motor control, and legacy system upgrades requiring stable component supply and long-term manufacturability.
Supply support for 74HCT112PW,118 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, and efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HCT112PW,118 belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between TTL-based legacy systems and modern CMOS-based controllers while maintaining industrial temperature resilience and ESD robustness.
FAQ
Can 74HCT112PW,118 operate at 3.3 V supply?
No. The 74HCT112PW,118 is specified only for VCC = 4.5 V to 5.5 V per JEDEC standard No. 7A. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be reliably met by TTL outputs, and output drive strength degrades significantly. Use 74AHCT112 or 74LVC112 for 3.3 V operation.
What happens if both nSD and nRD are pulled LOW simultaneously?
When nSD and nRD are both LOW, the outputs enter an undefined state per the function table. Subsequent release of both lines to HIGH produces unpredictable nQ/nQ values. Design must prevent concurrent assertion-use priority encoding or external logic to enforce mutual exclusion.
Is the Schmitt-trigger applied to all inputs or only the clock?
Only the clock inputs (1CP and 2CP) feature Schmitt-trigger action, as confirmed in Section 1 of the datasheet. J, K, nSD, and nRD inputs use standard CMOS thresholds without hysteresis; they require clean, monotonic transitions to avoid glitches.
Does 74HCT112PW,118 support hot insertion?
No. The device lacks hot-swap protection circuitry. Applying VCC while inputs are biased violates absolute maximum ratings (e.g., VI > VCC + 0.5 V). Power sequencing-VCC first, then inputs-must be enforced. Use series current-limiting resistors and input clamping if live insertion is unavoidable.
74HCT112PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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,118 FAQ
1.How can I place an order for 74HCT112PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT112PW,118 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,118 reliable?
The price and inventory of 74HCT112PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT112PW,118 is usually 5 days.
3.What payment methods are accepted for 74HCT112PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT112PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT112PW,118?
74HCT112PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT112PW,118 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,118?
For technical support, including 74HCT112PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT112PW,118 requirements.
6.How does Aetrix verify that 74HCT112PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT112PW,118 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,118 meets industry standards.
7.What is the process for return or replacement of 74HCT112PW,118?
All 74HCT112PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT112PW,118, 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,118 part is unused and in its original packaging.
Return procedure for 74HCT112PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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