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Nexperia USA Inc. 74ABT74DB,118
- Part No.:
- 74ABT74DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74ABT74DB,118.pdf
- Description:
- IC FF D-TYPE DUAL 1BIT 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,673
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Product details
Overview
74ABT74DB,118 from Nexperia is a dual positive-edge-triggered D-type flip-flop with independent asynchronous set (SD) and reset (RD) inputs, complementary Q/Q̅ outputs per channel, 180 MHz maximum clock frequency at 5.0 V, 1.0 ns minimum propagation delay, and IOFF-enabled partial power-down protection. It operates across -40 °C to +85 °C and supports TTL-level interfacing in synchronous logic control circuits.
For engineers reviewing the 74ABT74DB,118 datasheet, 74ABT74DB,118 pinout, 74ABT74DB,118 application, or 74ABT74DB,118 equivalent, this device is selected for high-speed edge-triggered data latching in industrial control sequencers, bus interface synchronization, and clock-domain crossing where deterministic setup/hold timing (2.4 ns tsu, 0 ns th) and low-skew output switching (0.5 ns skew) are required.
Technical Context
The 74ABT74DB,118 implements two independent D-flip-flops sharing no internal coupling-each with dedicated SD, RD, CP, D, Q, and Q̅ terminals. Its BiCMOS architecture delivers TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and rail-to-rail output drive (IOH = −15 mA, IOL = 20 mA) under 4.5–5.5 V supply.
Asynchronous set/reset operate at active-LOW with 2.0 ns minimum pulse width and 2.1 ns recovery time to clock. The IOFF circuit disables outputs during VCC = 0 V, blocking backflow current-a critical feature for hot-swap and multi-voltage domain systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL and mixed-supply systems. |
| Max clock frequency | 180 MHz at 5.0 V - Supports high-throughput data capture in real-time control loops. |
| Propagation delay (CP→Q) | 1.0–4.7 ns - Enables sub-5 ns timing margins for tight synchronous designs. |
| Setup/hold time (D→CP) | 2.4 ns setup / 0 ns hold - Simplifies timing closure with zero hold constraint on data stability. |
| Output skew | 0.5 ns max - Guarantees matched switching between Q and Q̅ outputs for clean differential signaling. |
| IOFF leakage | ±100 μA at VCC = 0 V - Prevents destructive back-current during partial power-down. |
| Operating temperature | −40 °C to +85 °C - Validated for industrial ambient conditions without derating. |
Pinout & Package
74ABT74DB,118 is supplied in SO14 (SOT108-1) package: plastic small outline, 14-lead, 3.9 mm body width, 1.27 mm lead pitch. Pin 1 is index-marked; leads are gull-wing, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 (1RD, 2RD) | Asynchronous reset (active LOW) | Forces Q = LOW regardless of clock state; overrides all other inputs. |
| 2, 12 (1D, 2D) | Data input | Samples and latches logic level on rising CP edge if setup/hold met. |
| 3, 11 (1CP, 2CP) | Clock input (LOW-to-HIGH edge) | Triggers synchronous data transfer; edge-sensitive, not level-sensitive. |
| 4, 10 (1SD, 2SD) | Asynchronous set (active LOW) | Forces Q = HIGH regardless of clock state; independent per flip-flop. |
| 5, 9 (1Q, 2Q) | True output | Reflects stored D value after CP edge; drives TTL loads directly. |
| 6, 8 (1Q̅, 2Q̅) | Complement output | Logic inverse of Q; enables differential latch or toggle-mode operation. |
| 7 | GND | Reference ground (0 V) for all inputs, outputs, and internal circuitry. |
| 14 | VCC | Positive supply (4.5–5.5 V); powers both logic core and output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS process technology | Combines bipolar speed and CMOS low static power for 250 MHz typ fmax and <50 μA ICC quiescent current. |
| IOFF partial power-down | Automatically disables outputs when VCC = 0 V, eliminating backfeed risk in live-backplane systems. |
| TTL-compatible interface | Accepts standard TTL VIH/VIL thresholds and drives −15 mA/20 mA loads without external level shifters. |
| Latch-up immunity | Exceeds 500 mA per JESD78B Class II Level A - robust against transient-induced parasitic thyristor activation. |
| ESD protection | HBM >2000 V and CDM >1000 V - meets industrial handling requirements without additional protection circuitry. |
Applications
| Industrial PLC Sequencing | Memory Address Latching |
|---|---|
|
Use Scenario: Capturing sensor status or actuator command signals synchronized to a master controller clock in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel edge-triggered latch holding parallel I/O states with independent reset for fault-clearing. Use Value: 2.4 ns setup time and 0 ns hold enable direct connection to microcontroller GPIOs without added timing buffers. |
Use Scenario: Stabilizing address bus signals before memory access in 8-bit microprocessor systems (e.g., Z80, 8080). IC Role / Device Role / Timing Role: Synchronizing volatile address lines to eliminate metastability during read/write cycles. Use Value: Complementary Q/Q̅ outputs allow simultaneous enable of upper/lower memory banks with matched propagation delay. |
| Bus Interface Isolation | State Machine Control Register |
|
Use Scenario: Isolating legacy 5 V TTL data buses from newer low-voltage subsystems using level-shifting logic. IC Role / Device Role / Timing Role: Transparent D-latch stage with IOFF enabling safe hot-plug insertion into powered backplanes. Use Value: IOFF circuit prevents back-current damage when one side of the bus is unpowered during maintenance. |
Use Scenario: Implementing finite-state machine registers in FPGA companion logic or discrete control units. IC Role / Device Role / Timing Role: Dual flip-flop storing current state bits with asynchronous reset for power-on initialization. Use Value: Independent SD/RD per channel allows atomic state reset without affecting adjacent control bits. |
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 | PDIP-14 package only; no TSSOP/SO variants; identical AC/DC specs and pinout. | Preferred for through-hole prototyping or legacy board rework where SO14 footprint unavailable. | Select when mechanical mounting requires axial leads or wave-solder compatibility. |
| 74LVC74AD,118 | Lower VCC range (1.65–3.6 V); 3.3 V optimized; 170 MHz max fmax; no IOFF circuitry. | Suitable for modern low-voltage digital systems but incompatible with 5 V bus domains. | Choose only for 3.3 V-only designs where power efficiency outweighs 5 V interoperability. |
Compared with SN74ABT74N, 74ABT74DB,118 offers surface-mount SO14 packaging for higher density and thermal performance; versus 74LVC74AD,118, it provides full 5 V tolerance, IOFF protection, and 10 MHz higher clock headroom-critical for mixed-voltage industrial interfaces.
Availability
74ABT74DB,118 is available at Aetrix Electronics and suitable for industrial PLC sequencing, memory address latching, and bus interface isolation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74ABT74DB,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 logic, analog, and MOSFET solutions with emphasis on reliability, efficiency, and application-specific optimization.
The 74ABT74DB,118 belongs to Nexperia's ABT-series advanced bi-directional TTL-compatible logic family, engineered for high-speed industrial control, instrumentation, and legacy system interfacing where 5 V robustness and timing precision are mandatory.
FAQ
Does 74ABT74DB,118 support mixed-voltage operation between 3.3 V and 5 V domains?
No. The 74ABT74DB,118 is specified only for 4.5–5.5 V VCC operation and TTL-compatible input thresholds (VIH ≥ 2.0 V). While it may accept 3.3 V logic-high inputs, its output swing remains 0 V/5 V, risking overvoltage damage to downstream 3.3 V receivers unless level-shifted. It is not designed for true mixed-voltage I/O.
What is the function of the IOFF circuit, and when does it activate?
The IOFF circuit disables all outputs (Q, Q̅) when VCC drops below ~0.8 V, preventing reverse current flow from powered I/O lines into the unpowered IC. It activates automatically during power-down sequences and remains active until VCC rises above the turn-on threshold-no external control signal is needed.
Can 74ABT74DB,118 be used as a toggle flip-flop (T-FF)?
Yes, by connecting Q̅ to D on each section. With CP driven continuously and SD/RD held HIGH, each flip-flop toggles on every rising clock edge. The 0 ns hold time simplifies this configuration, and the 180 MHz fmax supports toggle rates up to 90 MHz in practice.
Is the 74ABT74DB,118 pin-compatible with older 74LS74 or 74HC74 devices?
No. Although functional equivalence exists, pin assignments differ: 74ABT74DB,118 places 1RD on pin 1 and 2RD on pin 13, whereas 74LS74 uses pins 4 and 11 for SD/RD. Direct replacement requires PCB layout revision-not drop-in compatible.
74ABT74DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ABT
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 4.2ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 15mA, 20mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 50 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74ABT74DB,118 FAQ
1.How can I place an order for 74ABT74DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT74DB,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 74ABT74DB,118 reliable?
The price and inventory of 74ABT74DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT74DB,118 is usually 5 days.
3.What payment methods are accepted for 74ABT74DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT74DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT74DB,118?
74ABT74DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT74DB,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 74ABT74DB,118?
For technical support, including 74ABT74DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT74DB,118 requirements.
6.How does Aetrix verify that 74ABT74DB,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT74DB,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 74ABT74DB,118 meets industry standards.
7.What is the process for return or replacement of 74ABT74DB,118?
All 74ABT74DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT74DB,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 74ABT74DB,118 part is unused and in its original packaging.
Return procedure for 74ABT74DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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