My Inquiry
My Account
Texas Instruments SN74ABT574APWR
- Part No.:
- SN74ABT574APWR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT574APWR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ABT574APWR from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for high-speed bus interface and data latching in 5-V TTL-compatible systems. It features +32-mA/-64-mA drive strength, Ioff partial-power-down support, and operates across −40°C to 85°C. It is used in bidirectional bus drivers and I/O port registers where low ground bounce (<1 V) and fast 150-MHz clocking are required.
For engineers reviewing the SN74ABT574APWR datasheet, SN74ABT574APWR pinout, SN74ABT574APWR application, or SN74ABT574APWR equivalent, key selection criteria include its TSSOP-20 package, 3-state output control via OE, edge-triggered D-to-Q propagation (tPLH/tPHL ≤ 6.8 ns), and compatibility with 5-V logic buses requiring high sink/source capability and bus isolation.
Technical Context
This device implements eight independent D-type latches synchronized to the rising edge of CLK, with asynchronous 3-state control via OE. Its output structure supports simultaneous high-drive (−32 mA IOH, 64 mA IOL) and high-impedance states without affecting internal latch operation.
The Ioff circuitry actively disables outputs during power-down to prevent backflow current, and latch-up performance exceeds 500 mA per JEDEC JESD17. ESD protection meets 2000-V HBM and 200-V MM standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ABT - Advanced BiCMOS Technology, 5-V TTL-compatible with CMOS input thresholds |
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation across industrial 5-V rail tolerances |
| Max Clock Frequency | 150 MHz - Supports high-throughput data capture in synchronous bus interfaces |
| Output Drive | −32 mA (IOH), +64 mA (IOL) - Drives heavy capacitive loads (e.g., >50-pF traces) without external buffers |
| Propagation Delay | tPLH/tPHL ≤ 6.8 ns @ CL = 50 pF - Enables sub-7-ns timing margins in 150-MHz systems |
| Ioff Support | ±100 µA max @ VCC = 0 V - Prevents damaging current flow when powered down in mixed-voltage systems |
| Operating Temperature | −40°C to +85°C - Qualified for industrial ambient environments without derating |
Pinout & Package
TSSOP-20 package (PW), 6.95 mm × 4.4 mm × 1.2 mm height, 0.65-mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8, 11–18 | Data inputs (1D–8D) and outputs (1Q–8Q) | Eight parallel D-input and Q-output channels; pins 1–8 = D1–D8, pins 11–18 = Q1–Q8 |
| 9 | GND | Ground reference for all I/O and internal logic; must be low-impedance connection |
| 10 | VCC | 5-V supply input; requires local 0.1-µF ceramic decoupling adjacent to pin |
| 19 | CLK | Positive-edge clock input; triggers simultaneous latching of all eight D inputs to Q outputs |
| 20 | OE | Active-low 3-state enable; asserts high-impedance on all Q outputs when high, regardless of CLK or D state |
Key Features
| Feature | Design Value |
|---|---|
| High-Drive 3-State Outputs | Delivers ±32/64 mA drive while enabling clean bus sharing without contention or pull-ups |
| Ioff Partial-Power-Down Protection | Blocks reverse current flow when VCC = 0 V, supporting hot-swap and multi-rail power sequencing |
| Low Ground Bounce | VOLP < 1 V at 5 V/25°C - Reduces noise coupling into sensitive analog or clock domains |
| Rising-Edge Triggering | Synchronizes all eight bits on a single CLK↑ transition - eliminates skew between parallel data paths |
| JEDEC Latch-Up Immunity | Exceeds 500 mA per JESD17 - ensures robustness in noisy industrial power environments |
Applications
| Buffer Register | I/O Port Interface |
|---|---|
Use Scenario: Holding parallel data from a microcontroller data bus before transmission to an external memory or peripheral. IC Role / Device Role / Timing Role: Acts as a transparent, edge-triggered latch that isolates bus loading and synchronizes write timing to external clock domains. Use Value: Eliminates need for discrete buffers or pull-up resistors while maintaining 150-MHz throughput and sub-7-ns setup/hold compliance. | Use Scenario: Implementing a programmable 8-bit bidirectional I/O port between an FPGA and legacy parallel peripherals. IC Role / Device Role / Timing Role: Provides direction-controlled 3-state buffering with OE-driven bus release, enabling shared data lines without tristate conflicts. Use Value: Enables true bidirectional data flow using a single control signal (OE), reducing PCB routing complexity and FPGA pin count. |
| Bus Driver | Working Register |
Use Scenario: Driving long PCB traces or multiple TTL inputs on a backplane data bus subject to >50-pF capacitance. IC Role / Device Role / Timing Role: Functions as a high-current, low-skew bus transceiver with controlled enable timing (tPZL/tPHZ ≤ 6.7 ns). Use Value: Sustains signal integrity at 150 MHz without termination networks or repeaters due to −32/+64 mA drive capability. | Use Scenario: Storing intermediate results in a real-time digital signal processing pipeline with deterministic latency. IC Role / Device Role / Timing Role: Serves as a synchronous working register that captures and holds eight bits on each CLK↑ with fixed 6.8-ns propagation delay. Use Value: Guarantees cycle-accurate data retention and predictable timing across temperature (−40°C to 85°C) and voltage (4.5–5.5 V). |
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 |
|---|---|---|---|
| SN74LVC574APWR | 3.3-V only (1.65–3.6 V), lower drive (−24/+24 mA), no Ioff, 8.5-ns max tPLH | Requires level-shifting for 5-V systems; unsuitable for hot-swap or mixed-voltage power-down | Select when operating exclusively in 3.3-V domains with relaxed timing and lower power budgets |
| 74ACT574PWRE4 | 5-V ACT family, higher speed (tPLH ≤ 5.5 ns), but no Ioff, higher ICC (30 mA), no 200-V MM ESD rating | Lacks partial-power-down safety; less robust in ESD-prone industrial environments | Select when maximum speed is critical and power sequencing is fully controlled |
Compared with SN74LVC574APWR and 74ACT574PWRE4, the SN74ABT574APWR uniquely combines 5-V tolerance, Ioff-enabled safe power-down, 64-mA sink capability, and 200-V machine-model ESD protection-making it the preferred choice for industrial bus interfaces requiring reliability under voltage transients and mixed-rail operation.
Availability
SN74ABT574APWR is available at Aetrix Electronics and suitable for industrial I/O expansion, embedded bus interfacing, and programmable logic co-processing requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SN74ABT574APWR 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 over 50 years of industrial-grade product development.
The SN74ABT574A belongs to TI's ABT logic family, engineered for high-speed, high-drive 5-V TTL-compatible bus interface applications where signal integrity, power-down safety, and latch-up immunity are critical.
FAQ
What is the recommended power supply decoupling for SN74ABT574APWR?
Place a 0.1-µF ceramic capacitor between VCC (pin 10) and GND (pin 9), located within 3 mm of the SN74ABT574APWR package. For systems with high di/dt, add a 4.7-µF bulk capacitor nearby. This minimizes supply noise and ensures stable 150-MHz operation and low ground bounce (<1 V).
Can SN74ABT574APWR be used in hot-swap applications?
Yes. The SN74ABT574APWR includes Ioff circuitry that disables outputs when VCC = 0 V, limiting reverse current to ±100 µA. This allows safe insertion/removal in live backplanes, provided OE is held high during power-up/down to maintain high-impedance outputs on SN74ABT574APWR.
What is the minimum pulse width required on CLK for reliable operation of SN74ABT574APWR?
The SN74ABT574APWR requires a minimum CLK high and low time of 3.3 ns each at VCC = 5 V and TA = 25°C. At full temperature range (−40°C to 85°C), maintain ≥4 ns pulse width to ensure margin for propagation delay variation and jitter.
How does OE affect internal latch behavior in SN74ABT574APWR?
OE has no effect on internal latch operation in SN74ABT574APWR. Data continues to be captured on each CLK↑ edge and retained in the flip-flops regardless of OE state. OE only controls output driver enablement - allowing new data entry or retention while outputs remain high-Z.
Is SN74ABT574APWR compatible with 3.3-V logic inputs?
Yes. SN74ABT574APWR accepts 3.3-V logic-high signals directly: VIH is specified at 2.0 V min, and inputs tolerate up to VCC (5.5 V). However, outputs swing to 5-V levels, so level translation is required if driving 3.3-V-only receivers.
SN74ABT574APWR 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
SN74ABT574APWR FAQ
1.How can I place an order for SN74ABT574APWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT574APWR 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 SN74ABT574APWR reliable?
The price and inventory of SN74ABT574APWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT574APWR is usually 5 days.
3.What payment methods are accepted for SN74ABT574APWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT574APWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT574APWR?
SN74ABT574APWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT574APWR 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 SN74ABT574APWR?
For technical support, including SN74ABT574APWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT574APWR requirements.
6.How does Aetrix verify that SN74ABT574APWR is sourced from the original manufacturer or authorized distributors?
All SN74ABT574APWR 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 SN74ABT574APWR meets industry standards.
7.What is the process for return or replacement of SN74ABT574APWR?
All SN74ABT574APWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT574APWR, 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 SN74ABT574APWR part is unused and in its original packaging.
Return procedure for SN74ABT574APWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ABT574APWR 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…
