My Inquiry
My Account
NXP Semiconductors 74ABT74DB,112
- Part No.:
- 74ABT74DB,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
74ABT74DB,112.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:756
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ABT74DB,112 from Nexperia is a dual positive-edge-triggered D-type flip-flop with asynchronous set (active LOW) and reset (active LOW), 14-pin SO14 package, 5 V supply, 150 MHz max clock frequency, and IOFF partial power-down capability. It stores data on LOW-to-HIGH clock transitions and delivers complementary Q/Q̅ outputs per channel for synchronous logic control in bus interface and state machine circuits.
For engineers reviewing the 74ABT74DB,112 datasheet, 74ABT74DB,112 pinout, 74ABT74DB,112 application, or 74ABT74DB,112 equivalent, key selection criteria include guaranteed 150 MHz operation across -40 °C to +85 °C, BiCMOS output drive (20 mA sink / 15 mA source), TTL-compatible input thresholds, and IOFF-enabled backflow current protection during partial power-down.
Technical Context
This device implements two independent edge-triggered D flip-flops sharing no internal coupling-each with dedicated D, CP, SD, RD, Q, and Q̅ terminals. Its BiCMOS architecture enables high-speed propagation (tPLH/tPHL ≤ 4.7 ns) while maintaining robust noise immunity via specified VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V.
The IOFF circuitry activates when VCC = 0 V, forcing outputs into high-impedance state regardless of input voltage (≤ 4.5 V), preventing destructive backflow current in mixed-voltage or hot-swap systems. Asynchronous set/reset operate independently of clock timing, with minimum pulse width tW = 2.2 ns and recovery time trec = 2.4 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL/CMOS logic rails and tolerates ±10 % regulation variation. |
| Max Clock Frequency | 150 MHz at -40 °C to +85 °C - Supports high-speed synchronous data latching in bus arbitration and pipeline control. |
| Propagation Delay | tPLH/tPHL ≤ 4.7 ns (CP→Q/Q̅) - Enables sub-7 ns cycle timing margin in 150 MHz systems. |
| Output Drive | IOL = 20 mA / IOH = -15 mA - Drives 10+ standard TTL loads or 20+ CMOS inputs without external buffering. |
| IOFF Leakage | ±100 μA at VCC = 0 V - Limits backflow current during partial power-down, protecting upstream/downstream devices. |
| Operating Temperature | -40 °C to +85 °C - Qualified for industrial-grade embedded control and communications equipment. |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - Guarantees reliable interfacing with legacy TTL outputs and 5 V microcontroller GPIOs. |
Pinout & Package
74ABT74DB,112 is supplied in SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 (1RD, 2RD) | Asynchronous reset (active LOW) | Forces Q = LOW / Q̅ = HIGH immediately, independent of clock; requires ≥2.2 ns pulse width. |
| 2, 12 (1D, 2D) | Data input | Samples and holds logic level at next LOW-to-HIGH clock edge if setup/hold times (tsu = 2.4 ns, th = 0 ns) are met. |
| 3, 11 (1CP, 2CP) | Clock input (edge-triggered) | Triggers storage only on LOW-to-HIGH transition; immune to glitches during stable HIGH/LOW states. |
| 4, 10 (1SD, 2SD) | Asynchronous set (active LOW) | Forces Q = HIGH / Q̅ = LOW immediately; priority over clocked data but lower than reset in conflict. |
| 5, 9 (1Q, 2Q) | True output | Reflects stored D value after clock edge or asynchronous set/reset; drives TTL/CMOS loads directly. |
| 6, 8 (1Q̅, 2Q̅) | Complement output | Logic inverse of Q; enables differential signaling or eliminates need for external inverters in toggle applications. |
| 7 | GND | 0 V reference plane; must be low-inductance connection to minimize ground bounce in high-speed switching. |
| 14 | VCC | +5 V supply; decoupling capacitor (100 nF ceramic) required within 1 cm for stable dynamic operation. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS high-speed output stage | Delivers 20 mA sink / 15 mA source drive at 5 V, enabling direct fanout to 10+ TTL gates without buffers. |
| IOFF partial power-down protection | Disables outputs when VCC = 0 V, blocking damaging backflow current in mixed-power-rail or hot-swap systems. |
| Power-up 3-state behavior | Outputs remain high-impedance until VCC stabilizes, preventing bus contention during system power sequencing. |
| Latch-up immunity >500 mA | Exceeds JESD78B Class II Level A, ensuring robustness against transient overvoltage and ESD-induced latch-up. |
| HBM ESD rating >2000 V | Withstands human-body-model discharges up to 2 kV, reducing handling sensitivity in manufacturing and field repair. |
Applications
| Bus Interface Logic | Digital State Machine |
|---|---|
Use Scenario: Isolating and synchronizing data between mismatched clock domains in microcontroller peripheral buses (e.g., SPI-to-parallel conversion). IC Role / Device Role / Timing Role: Dual D flip-flop acts as a 2-bit synchronizer and level shifter, capturing asynchronous signals with metastability suppression via double-clocking. Use Value: Eliminates need for discrete logic or FPGA resources by providing two independent, edge-triggered storage elements with guaranteed 150 MHz throughput. |
Use Scenario: Implementing finite-state controllers in industrial PLC I/O modules requiring deterministic timing and fail-safe reset. IC Role / Device Role / Timing Role: Stores current state bits and generates next-state logic using Q/Q̅ outputs; asynchronous RD/SD enable immediate fault recovery or initialization. Use Value: Reduces BOM count vs. discrete gate-based designs while delivering sub-5 ns propagation delay for tight state-transition timing budgets. |
| Memory Address Latching | TTL-Compatible Signal Conditioning |
Use Scenario: Capturing and holding address bus values during memory read/write cycles in 8-bit microprocessor systems (e.g., Z80, 8085). IC Role / Device Role / Timing Role: Acts as a dual address register, sampling AD[0:1] on rising clock edge to stabilize address lines before memory access strobe assertion. Use Value: Provides precise 2-bit latching with setup/hold margins verified down to 2.4 ns tsu and 0 ns th, ensuring reliable address capture at full CPU speed. |
Use Scenario: Converting noisy or slow-rising signals from sensors or mechanical switches into clean, fast-rising TTL-level pulses for MCU interrupt inputs. IC Role / Device Role / Timing Role: Functions as a dual Schmitt-trigger replacement: D input tied HIGH, CP driven by raw signal, Q used as debounced output. Use Value: Leverages built-in hysteresis-free edge triggering and 20 mA drive to eliminate external RC networks and pull-ups while improving noise rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT74N | Same logic function and pinout (SO14), but TI version lacks IOFF circuitry and specifies only 125 MHz max fmax at 85 °C. | Not suitable for partial power-down systems; requires external isolation for hot-swap or multi-rail designs. | Select 74ABT74DB,112 when IOFF protection or guaranteed 150 MHz operation across full temperature range is required. |
| 74LVC74AD,118 | Lower-voltage 1.65–3.6 V operation, 3.3 V compatible; smaller TSSOP14 package; max fmax = 175 MHz but only rated to +125 °C industrial grade. | Designed for mixed-voltage 3.3 V systems; incompatible with 5 V-only buses without level translation. | Choose 74ABT74DB,112 for legacy 5 V TTL environments where voltage compatibility and proven industrial reliability outweigh speed gains. |
Compared with SN74ABT74N and 74LVC74AD,118, the 74ABT74DB,112 uniquely combines 5 V TTL interoperability, IOFF-enabled safe power sequencing, and 150 MHz performance across -40 °C to +85 °C-making it optimal for industrial bus interfaces where robustness and voltage consistency are critical.
Availability
74ABT74DB,112 is available at Aetrix Electronics and suitable for industrial automation controllers, legacy microprocessor bus interfaces, and digital test equipment requiring stable component supply, long-term lifecycle support, and guaranteed SO14 packaging consistency.
Supply support for 74ABT74DB,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 focused on high-performance, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74ABT74 family targets industrial-grade 5 V digital systems requiring robust edge-triggered storage with partial power-down safety-designed specifically for bus interface, state machine, and address latching applications where TTL compatibility and latch-up immunity are essential.
FAQ
What is the maximum operating frequency of the 74ABT74DB,112 across its full temperature range?
The 74ABT74DB,112 is fully specified for 150 MHz maximum clock frequency from -40 °C to +85 °C, as confirmed in Table 7 of the Nexperia datasheet Rev. 4. This value reflects worst-case timing under recommended operating conditions (VCC = 5.0 V ± 0.5 V), not typical or room-temperature-only performance.
Does the 74ABT74DB,112 support partial power-down, and how does it behave when VCC = 0 V?
Yes, the 74ABT74DB,112 includes IOFF circuitry that disables all outputs when VCC = 0 V, limiting power-off leakage current to ±100 μA (Table 6). This prevents backflow current through the device even if input or output pins are biased to up to 4.5 V, protecting downstream circuitry during hot-swap or multi-rail power sequencing.
What are the setup and hold time requirements for the D inputs of the 74ABT74DB,112?
The 74ABT74DB,112 requires a minimum setup time (tsu) of 2.4 ns and zero hold time (th = 0 ns) for D inputs relative to the LOW-to-HIGH clock transition, as specified in Table 7. These values apply across the full -40 °C to +85 °C operating range at VCC = 5.0 V ± 0.5 V.
Is the 74ABT74DB,112 pin-compatible with other 74ABT74 variants such as the TSSOP version?
No-the 74ABT74DB,112 uses SO14 (SOT108-1) packaging, while the TSSOP variant (74ABT74PW) uses SOT402-1. Though both share identical logic functionality and pin numbering, their physical footprints differ: SO14 has 3.9 mm body width and 1.27 mm pitch; TSSOP14 has 4.4 mm width and 0.65 mm pitch. PCB layout is not interchangeable.
What is the output drive capability of the 74ABT74DB,112, and how does it compare to standard TTL?
The 74ABT74DB,112 delivers 20 mA sink current (IOL) and -15 mA source current (IOH) at VCC = 4.5 V, exceeding standard TTL (74LS) drive strength (8 mA sink / 0.4 mA source). This allows direct driving of 10+ TTL loads or 20+ CMOS inputs without buffer stages, simplifying board design and improving signal integrity.
74ABT74DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ABT74DB,112 FAQ
1.How can I place an order for 74ABT74DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT74DB,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 74ABT74DB,112 reliable?
The price and inventory of 74ABT74DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT74DB,112 is usually 5 days.
3.What payment methods are accepted for 74ABT74DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT74DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT74DB,112?
74ABT74DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT74DB,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 74ABT74DB,112?
For technical support, including 74ABT74DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT74DB,112 requirements.
6.How does Aetrix verify that 74ABT74DB,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT74DB,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 74ABT74DB,112 meets industry standards.
7.What is the process for return or replacement of 74ABT74DB,112?
All 74ABT74DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT74DB,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 74ABT74DB,112 part is unused and in its original packaging.
Return procedure for 74ABT74DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ABT74DB,112 Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
