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Texas Instruments SN74ABT374APWR
- Part No.:
- SN74ABT374APWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT374APWR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,662
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Product details
Overview
SN74ABT374APWR from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs in a 20-pin TSSOP (PW) package. It operates at 4.5–5.5 V, supports 150 MHz clock frequency, delivers ±32 mA/±64 mA output drive, and is rated for –40°C to 85°C industrial temperature range. It serves as a high-drive bus interface register in data path buffering and bidirectional I/O control.
For engineers reviewing the SN74ABT374APWR datasheet, SN74ABT374APWR pinout, SN74ABT374APWR application, or SN74ABT374APWR equivalent, key selection criteria include its 3-state output enable timing (tPZH/tPLZ < 5.2 ns), low ground bounce (<1 V), latch-up immunity (>500 mA), and compatibility with capacitive bus loads in industrial control and legacy parallel interfaces.
Technical Context
This device implements eight independent positive-edge-triggered D flip-flops, each synchronized to the rising edge of CLK. Data present at D inputs is latched into Q outputs on CLK↑, with propagation delays tPLH/tPHL ≤ 6.2 ns (CL = 50 pF). Internal state retention is unaffected by OE assertion.
The buffered OE input controls all eight outputs simultaneously, placing them in high-impedance (Z) state without disrupting internal storage. OE must be pulled up to VCC during power-up/down to ensure defined Z-state; it does not gate the clock path or alter flip-flop functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V TTL/CMOS systems with ±10% rail tolerance. |
| Max Clock Frequency | 150 MHz - Supports high-speed data latching in parallel bus applications such as memory-mapped I/O or FIFO staging. |
| Output Drive | –32 mA IOH / +64 mA IOL - Enables direct driving of heavily loaded buses without external buffers or pull-ups. |
| Propagation Delay | tPLH/tPHL ≤ 6.2 ns (VCC = 5 V, CL = 50 pF) - Guarantees sub-7 ns timing margin for 150 MHz synchronous designs. |
| 3-State Enable Delay | tPZH ≤ 5.2 ns, tPLZ ≤ 6.5 ns - Allows rapid bus turnaround in shared-data-path architectures like dual-ported memory interfaces. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - Compatible with TTL-level signaling and robust against noise in mixed-voltage systems. |
| ESD Protection | ≥2000 V HBM, ≥200 V MM - Meets MIL-STD-883 requirements for handling reliability in manufacturing and field environments. |
Pinout & Package
TSSOP-20 (PW) package: 6.5 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE (Output Enable) | Active-low control for all 8 outputs; asserts high-impedance state when high, enables normal logic levels when low. |
| 2–9 | 1Q–8Q (Outputs) | Tri-stateable buffered outputs; retain latched data regardless of OE state; drive bus lines directly. |
| 10 | GND | Ground reference for all internal circuitry and output drivers; requires low-inductance connection to minimize ground bounce. |
| 11 | VCC | 5 V supply input; decoupling capacitor (0.1 µF ceramic) required near pin to suppress switching noise. |
| 12–19 | 1D–8D (Data Inputs) | Asynchronous D inputs; sampled on rising CLK edge; must meet setup/hold times (tsu = 1 ns, th = 2.1 ns). |
| 20 | CLK | Global clock input; positive-edge sensitive; drives all 8 flip-flops synchronously; requires clean, low-jitter signal. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB BiCMOS process | Reduces dynamic power vs. pure bipolar while retaining high-speed drive capability and noise immunity. |
| High-impedance output control | OE pin enables bus sharing without contention; outputs float cleanly without leakage or shoot-through risk. |
| Low ground bounce (VOLP < 1 V) | Minimizes signal integrity degradation during simultaneous output switching in multi-bit bus applications. |
| Latch-up immunity >500 mA | Exceeds JEDEC JESD-17 - ensures survivability under transient overvoltage or ESD-induced substrate currents. |
| Industrial temperature range | –40°C to +85°C operation - qualified for use in programmable logic controllers, motor drives, and factory automation hardware. |
Applications
| Parallel Bus Interface | Industrial I/O Expansion |
|---|---|
|
Use Scenario: Interfacing a microcontroller's parallel address/data bus to external peripherals or memory-mapped devices. IC Role / Device Role / Timing Role: Acts as a transparent latch and bus driver, isolating MCU pins from load capacitance while enabling synchronous data capture. Use Value: Eliminates need for discrete buffers or pull-up resistors; supports 150 MHz burst transfers with guaranteed timing margins. |
Use Scenario: Adding GPIO expansion to PLC backplanes or industrial HMIs using legacy parallel control protocols. IC Role / Device Role / Timing Role: Provides 8-bit synchronized input sampling and output latching with configurable 3-state control per cycle. Use Value: Enables hot-swappable I/O modules via OE-controlled bus isolation; withstands industrial EMI and voltage transients. |
| Legacy System Upgrade | Digital Test Equipment |
|
Use Scenario: Replacing obsolete 74LS/ALS logic in aging test fixtures or avionics subsystems requiring higher drive and speed. IC Role / Device Role / Timing Role: Drop-in functional replacement for octal D-latches with enhanced electrical specs and modern packaging. Use Value: Maintains pin-compatible layout while improving noise margin, speed, and power efficiency over bipolar predecessors. |
Use Scenario: Building programmable pattern generators or digital stimulus boards requiring precise, synchronized multi-bit output control. IC Role / Device Role / Timing Role: Serves as a deterministic output register stage, capturing test vectors on CLK↑ and presenting them simultaneously. Use Value: Delivers sub-7 ns skew between outputs and supports 150 MHz vector rates - critical for high-speed digital validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244APWR | Octal buffer (non-latching), no clock or storage; identical PW package and drive strength. | Suitable only for unidirectional level translation or fan-out boosting - lacks edge-triggered storage. | Select when synchronous data retention is unnecessary and only bus buffering is required. |
| SN74LVC574APWR | Lower voltage (1.65–3.6 V), lower drive (±24 mA), smaller 20-pin TSSOP but different pinout (no OE on Pin 1). | Designed for 3.3 V systems; incompatible with 5 V buses without level shifting; not drop-in replaceable. | Choose for battery-powered or low-power 3.3 V designs where 5 V tolerance and high drive are not needed. |
Compared with SN74ABT244APWR and SN74LVC574APWR, the SN74ABT374APWR uniquely combines 5 V operation, edge-triggered storage, and high-current 3-state outputs in a compact TSSOP - making it irreplaceable for legacy 5 V synchronous bus interfacing where data latching and bus contention control are both essential.
Availability
SN74ABT374APWR is available at Aetrix Electronics and suitable for industrial control systems, legacy equipment upgrades, and digital test instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74ABT374APWR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of heritage in industry-standard logic families.
The ABT logic family - including SN74ABT374APWR - was engineered for high-speed, high-drive 5 V bus interfacing in industrial and telecom infrastructure, emphasizing noise immunity, latch-up robustness, and compatibility with legacy TTL systems.
FAQ
What is the operating temperature range for SN74ABT374APWR?
The SN74ABT374APWR is specified for industrial operation from –40°C to +85°C. This range is validated per TI's characterization and aligns with its qualification for use in programmable logic controllers, motor drives, and factory automation hardware where ambient thermal stress is common. The SN74ABT374APWR maintains full timing and drive performance across this span without derating.
Does SN74ABT374APWR support true 5 V TTL compatibility?
Yes, SN74ABT374APWR supports full 5 V TTL compatibility: VIH = 2.0 V and VIL = 0.8 V match standard TTL thresholds, and its outputs drive –32 mA (high) and +64 mA (low) into 5 V loads. It interfaces directly with legacy 74LS, 74AS, and microcontroller parallel ports without level shifters - a core design goal of the ABT family.
Can SN74ABT374APWR outputs be safely tied together on a shared bus?
Yes - the 3-state outputs of SN74ABT374APWR are explicitly designed for bus sharing. When OE is high, all outputs enter high-impedance mode with leakage < ±10 µA, eliminating contention. This allows multiple SN74ABT374APWR devices (or other compatible drivers) to share a single data or address bus without external arbitration logic.
What is the recommended power-up sequence for SN74ABT374APWR?
To guarantee predictable 3-state behavior at power-up, OE must be held high (inactive) until VCC stabilizes. TI recommends tying OE to VCC through a pullup resistor (value determined by driver sink capability, typically 4.7 kΩ–10 kΩ). This ensures outputs remain in high-impedance state during rail ramp-up, preventing bus conflicts before system initialization completes.
Is SN74ABT374APWR pin-compatible with older 74-series variants like SN74LS374?
No - while functionally similar, SN74ABT374APWR uses a different pinout than SN74LS374. In SN74ABT374APWR, OE is on Pin 1 and CLK on Pin 20; SN74LS374 places CLK on Pin 11 and OE on Pin 13. Direct PCB replacement requires layout revision. However, the SN74ABT374APWR's TSSOP-20 footprint is consistent across all ABT-series PW-packaged variants.
SN74ABT374APWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 200 MHz
- Max Propagation Delay @ V, Max CL:
- 6.6ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 250 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74ABT374APWR FAQ
1.How can I place an order for SN74ABT374APWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT374APWR 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 SN74ABT374APWR reliable?
The price and inventory of SN74ABT374APWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT374APWR is usually 5 days.
3.What payment methods are accepted for SN74ABT374APWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT374APWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT374APWR?
SN74ABT374APWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT374APWR 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 SN74ABT374APWR?
For technical support, including SN74ABT374APWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT374APWR requirements.
6.How does Aetrix verify that SN74ABT374APWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT374APWR 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 SN74ABT374APWR meets industry standards.
7.What is the process for return or replacement of SN74ABT374APWR?
All SN74ABT374APWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT374APWR, 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 SN74ABT374APWR part is unused and in its original packaging.
Return procedure for SN74ABT374APWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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