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Nexperia USA Inc. 74HC112DB,112
- Part No.:
- 74HC112DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC112DB,112.pdf
- Description:
- IC FF JK TYPE DUAL 1BIT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,166
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Product details
Overview
74HC112DB,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, 16-pin SO16 package, and CMOS-level input compatibility. It operates from 2.0 V to 6.0 V, supports up to 71 MHz maximum clock frequency at VCC = 6.0 V, and is specified for industrial temperature range (-40 °C to +125 °C). It serves in synchronous logic control, state machine sequencing, and clock-domain synchronization circuits.
For engineers reviewing the 74HC112DB,112 datasheet, 74HC112DB,112 pinout, 74HC112DB,112 application, or 74HC112DB,112 equivalent, key selection considerations include its dual independent JK sections with edge-triggered clocks, asynchronous set/reset timing margins (e.g., trec ≤ 20 ns at VCC = 6.0 V), propagation delay (tpd ≤ 30 ns at VCC = 6.0 V), Schmitt-trigger clock input tolerance, and SO16 mechanical footprint compatibility.
Technical Context
The device implements two fully independent JK flip-flops sharing no internal coupling-each with dedicated J, K, clock (nCP), set (nSD), reset (nRD), Q, and nQ terminals. Its negative-edge triggering requires stable J/K inputs one setup time (tsu ≥ 14 ns at VCC = 6.0 V) before the HIGH-to-LOW clock transition. Asynchronous nSD/nRD override clock action and force defined states regardless of nCP state.
Schmitt-trigger action on each nCP input enables robust operation with slow-rising/falling clock edges, while integrated input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The logic diagram confirms separate internal latches per section, with no shared control path between the two flip-flops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HC series - CMOS-compatible input thresholds, low static power (ICC ≤ 4.0 μA typical), rail-to-rail output swing |
| Function | Dual JK flip-flop - Each section provides full J/K-controlled toggle, set, reset, hold, and load functions per mode table |
| Trigger Edge | Negative-edge clock (nCP) - State changes occur only on HIGH-to-LOW transitions; immune to glitches on LOW-to-HIGH edges |
| Supply Voltage | 2.0 V to 6.0 V - Enables interoperability across 3.3 V and 5 V systems; VIH/VIL scale with VCC |
| Max Clock Frequency | 71 MHz at VCC = 6.0 V, CL = 15 pF - Supports high-speed sequential logic in data path and control units |
| Propagation Delay | 16 ns (tpd, nCP to nQ) at VCC = 6.0 V - Determines minimum clock period and timing margin in synchronous designs |
| Operating Temperature | -40 °C to +125 °C - Qualified for extended industrial environments without derating below 110 °C |
Pinout & Package
74HC112DB,112 is housed in a plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width. Pin 1 is index-marked; leads are gull-wing, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CP, 13CP | Clock input (section 1 & 2) | Negative-edge-triggered; Schmitt-trigger input accepts slow edges; must meet tsu/th timing relative to J/K |
| 1J, 2J / 1K, 2K | Data inputs | Control toggle/set/reset behavior per section; require stability before clock edge per function table |
| 1SD, 2SD / 1RD, 2RD | Asynchronous set/reset | Active-LOW; override clock and J/K; priority over all other inputs; no clock dependency |
| 1Q, 2Q / 1Q, 2Q | True/complement outputs | CMOS-level outputs drive standard TTL/CMOS loads; VOH ≥ 5.48 V, VOL ≤ 0.26 V at VCC = 6.0 V |
| VCC (pin 16), GND (pin 8) | Power supply | Single-supply operation; decoupling capacitor required near VCC/GND pins for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous set/reset | Independent nSD/nRD per section enable immediate state forcing without clock dependency-critical for power-up initialization and fault recovery |
| Schmitt-trigger clock input | Enables reliable operation with rise/fall times up to 120 ns at VCC = 2.0 V-eliminates need for external signal conditioning in noisy environments |
| Input clamp diodes | Allow safe interface to signals > VCC using series resistors-supports mixed-voltage system interconnect without level shifters |
| Wide supply range | 2.0 V to 6.0 V operation permits use in both 3.3 V microcontroller peripherals and legacy 5 V bus systems |
| ESD protection | HBM > 2000 V and CDM > 1000 V-meets JEDEC JS-001/JS-002 Class 2/C3 for robust handling in manufacturing and field deployment |
Applications
| Industrial PLC I/O Expansion | Digital Test Equipment Control |
|---|---|
Use Scenario: Latching sensor status bits in programmable logic controller backplane modules where deterministic state capture is required across multiple channels. IC Role / Device Role / Timing Role: Dual JK flip-flop acts as synchronized input register-nCP driven by system clock, nSD/nRD used for channel reset during configuration reload. Use Value: Asynchronous reset ensures clean state initialization prior to scan cycle start; 30 ns tpd enables sub-33 MHz scan rates with timing margin. | Use Scenario: Generating precise stimulus patterns in automated test equipment (ATE) pattern generators, where multi-bit sequences must be advanced on clock edges. IC Role / Device Role / Timing Role: Edge-triggered JK sections implement controlled toggling and preset operations in pattern sequencers-J/K inputs define next-state logic, nCP synchronizes advancement. Use Value: Negative-edge triggering avoids race conditions with rising-edge system clocks; 71 MHz fmax supports >14 Mbps pattern update rates. |
| Communication Protocol Glitch Filter | Legacy Bus Interface Synchronization |
Use Scenario: Debouncing and synchronizing asynchronous control signals (e.g., interrupt requests, handshake lines) crossing clock domains in UART/I²C bridge ICs. IC Role / Device Role / Timing Role: First-stage synchronizer-nCP tied to destination clock, nSD/nRD held inactive, J=K=1 configures toggle mode for metastability filtering. Use Value: Dual-section layout allows cascaded 2-stage synchronizers on single die; Schmitt-trigger nCP rejects sub-10 ns noise spikes on input lines. | Use Scenario: Adapting legacy parallel bus handshaking (e.g., ISA, PC/104) to modern microcontrollers by aligning strobe and acknowledge timing. IC Role / Device Role / Timing Role: Timing register-nCP driven by CPU clock, J/K configured for load-on-enable, nQ drives bus enable, nQ controls data latch timing. Use Value: Complementary outputs provide matched rise/fall paths for enable/hold signals; 16-pin SO16 footprint matches standard socket layouts for drop-in replacement. |
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 |
|---|---|---|---|
| 74HCT112DB,112 | TTL-compatible inputs (VIH = 2.0 V min), identical pinout and function; slightly higher ICC (≤ 80 μA) and lower fmax (70 MHz at VCC = 5 V) | Better suited for mixed 5 V TTL/CMOS systems where input drive strength from legacy logic is marginal | Select when interfacing directly to 74LS/74F outputs without level translation |
| SN74HC112DR | Same 74HC logic family and function but in SOIC-16 (PW package, SOT403-1); identical AC/DC specs except minor thermal derating (Ptot = 500 mW @ Tj ≤ 91 °C) | Smaller 4.4 mm body width suits space-constrained PCBs; same electrical performance but different land pattern | Select when board real estate is constrained and TSSOP reflow capability exists |
Compared with 74HCT112DB,112, the 74HC112DB,112 offers superior noise immunity and lower static power but requires CMOS-level input drive; versus SN74HC112DR, it delivers identical logic behavior with enhanced thermal margin in SO16 due to higher Ptot derating threshold (110 °C vs. 91 °C).
Availability
74HC112DB,112 is available at Aetrix Electronics and suitable for industrial automation controllers, digital test instrumentation, communication protocol bridges, and legacy bus interface modules requiring stable component supply across extended temperature ranges.
Supply support for 74HC112DB,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, reliability, and manufacturability in high-volume applications.
The 74HC112DB,112 belongs to Nexperia's 74HC logic family-designed for low-power, high-noise-immunity digital control in industrial, computing, and consumer systems operating across wide voltage and temperature ranges.
FAQ
Can 74HC112DB,112 operate reliably at 3.3 V supply?
Yes. The 74HC112DB,112 is fully specified from 2.0 V to 6.0 V. At VCC = 3.3 V, VIH = 2.31 V (70% of VCC), VIL = 0.99 V (30% of VCC), tpd ≈ 25 ns, and fmax ≈ 45 MHz-meeting requirements for 3.3 V FPGA/CPU peripheral interfacing with adequate timing margin.
What happens if both nSD and nRD go LOW simultaneously?
If nSD and nRD both transition LOW at the same time, the output states become unpredictable per the functional description. This condition must be avoided in design-use synchronized control or priority encoding to ensure only one asynchronous input asserts at a time during critical state transitions.
Is the SO16 package RoHS-compliant and lead-free?
Yes. The 74HC112DB,112 in SOT109-1 (SO16) package is manufactured per RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with Nexperia's environmental policy-verified via material declarations and IPC-J-STD-020 moisture sensitivity level 1 rating.
Does this device support hot insertion or live swapping?
No. The 74HC112DB,112 lacks hot-swap protection circuitry such as power-up reset, Ioff, or partial-power-down features. Applying VCC while inputs are driven can cause latch-up or excessive ICC. Power sequencing-VCC first, then inputs-is mandatory for safe operation.
74HC112DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-SSOP (0.209", 5.30mm 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:
- 71 MHz
- Max Propagation Delay @ V, Max CL:
- 30ns @ 6V, 50pF
- Trigger Type:
- Negative Edge
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- 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-SSOP
74HC112DB,112 FAQ
1.How can I place an order for 74HC112DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC112DB,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 74HC112DB,112 reliable?
The price and inventory of 74HC112DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC112DB,112 is usually 5 days.
3.What payment methods are accepted for 74HC112DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC112DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC112DB,112?
74HC112DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC112DB,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 74HC112DB,112?
For technical support, including 74HC112DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC112DB,112 requirements.
6.How does Aetrix verify that 74HC112DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HC112DB,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 74HC112DB,112 meets industry standards.
7.What is the process for return or replacement of 74HC112DB,112?
All 74HC112DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC112DB,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 74HC112DB,112 part is unused and in its original packaging.
Return procedure for 74HC112DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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