My Inquiry
My Account
Nexperia USA Inc. 74LVT573DB,112
- Part No.:
- 74LVT573DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LVT573DB,112.pdf
- Description:
- IC D-TYPE TRANSP SGL 8:8 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVT573DB,112 from Nexperia is a 3.3 V octal D-type transparent latch with 3-state outputs, designed for bus interfacing in high-speed digital systems. It features independent latch enable (LE, active HIGH) and output enable (OE, active LOW), bus hold inputs eliminating external pull-ups, and overvoltage-tolerant inputs up to 5.5 V. Used in microprocessor data buses, memory address latching, and I/O expansion where level translation and bus contention control are required.
For engineers reviewing the 74LVT573DB,112 datasheet, 74LVT573DB,112 pinout, 74LVT573DB,112 application, or 74LVT573DB,112 equivalent, key selection criteria include 3-state timing (tPZH ≤ 5.1 ns), bus hold current (IBHL = 75–150 μA), supply range (2.7–3.6 V), and SO20 package compatibility with legacy 74-series footprints.
Technical Context
The device implements eight independent D-type latches with transparent mode when LE is HIGH and storage mode on LE HIGH-to-LOW transition. Each latch output drives a 3-state buffer controlled solely by OE-latch state remains unaffected during output disable.
Bus hold circuitry actively maintains logic state at unused D inputs without external resistors; IOFF protection enables partial power-down operation with leakage < ±100 μA when VCC = 0 V. Input tolerance to 5.5 V allows safe interfacing with 5 V systems while operating from 3.3 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.7 V to 3.6 V - ensures compatibility with 3.3 V logic families and margin against rail droop |
| Propagation delay (Dn→Qn) | 1.0–4.2 ns at VCC ≥ 3.0 V - supports >200 MHz bus toggle rates in transparent mode |
| Output drive (IOL/IOH) | 64 mA sink / −32 mA source - sufficient to drive 50 Ω transmission lines or multiple TTL loads |
| Bus hold current | IBHL = 75–150 μA, IBHH = −150–−75 μA - reliably holds unused inputs without external components |
| Input overvoltage tolerance | VI up to 5.5 V - enables direct connection to 5 V buses without level shifters |
| Operating temperature | −40 °C to +85 °C - qualified for industrial ambient environments |
| ESD rating (HBM) | >2000 V - meets JEDEC JESD22-A114E for robust handling in assembly |
Pinout & Package
74LVT573DB,112 is supplied in SO20 (SOT163-1) package: plastic small outline, 20 leads, 7.5 mm body width, 1.27 mm lead pitch. Pin 1 index located at top-left corner with notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable input | Active LOW control for all 8 outputs; places Q0–Q7 in high-impedance state without affecting latch contents |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs with bus hold; tolerate 5.5 V and require no external pull-up/down |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and I/O; decoupling capacitor must be placed adjacent |
| 11 (LE) | Latch enable | Active HIGH; enables transparency when HIGH, captures Dn on HIGH-to-LOW edge |
| 12–19 (Q0–Q7) | 3-state outputs | True outputs (non-inverted); driven only when OE = LOW and reflect stored latch value |
| 20 (VCC) | Supply voltage | 3.3 V nominal power rail; requires local 100 nF ceramic decoupling between pins 10 and 20 |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold inputs | Eliminates need for 10 kΩ external pull-up resistors on unused D lines, reducing BOM count and board space |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V signals while powered from 2.7–3.6 V, enabling mixed-voltage system integration |
| IOFF partial power-down | Prevents back-driving current when VCC = 0 V, supporting live insertion/extraction in hot-swap applications |
| BiCMOS output stage | Delivers 64 mA sink current with low VOL (≤0.55 V at 64 mA), ensuring noise margin with TTL and CMOS loads |
| Power-up 3-state | Outputs remain in high-Z until VCC stabilizes above 1.2 V, preventing bus contention during power ramp |
Applications
| Microprocessor Data Bus Interface | Memory Address Latching |
|---|---|
Use Scenario: Interfacing an 8-bit microcontroller data bus to external peripherals or memory devices with shared bus architecture. IC Role / Device Role / Timing Role: Acts as bidirectional data latch: captures CPU write data on LE edge and presents read data to CPU via 3-state outputs controlled by OE. Use Value: Enables clean bus arbitration using single OE signal; bus hold prevents floating inputs during idle cycles, eliminating glitches. | Use Scenario: Latching 8-bit address segments (e.g., A0–A7) in 16-bit memory systems to reduce address bus loading and timing skew. IC Role / Device Role / Timing Role: Transparent latch holding lower address byte while upper byte transitions; LE synchronized to memory access strobe. Use Value: Reduces capacitive load on address bus drivers; propagation delay ≤4.2 ns ensures setup time compliance for fast SRAM access. |
| I/O Port Expansion | Legacy System Level Translation |
Use Scenario: Expanding GPIO count of FPGA or MCU by adding parallel input/output ports with bus isolation capability. IC Role / Device Role / Timing Role: Provides 8-bit input capture (D→Q transparent) and output driving (Q→bus) with independent OE control per port group. Use Value: Bus hold maintains stable input state during reconfiguration; 5.5 V tolerant inputs accept legacy 5 V sensor outputs directly. | Use Scenario: Bridging 3.3 V logic controllers to legacy 5 V peripheral subsystems (e.g., industrial PLC modules). IC Role / Device Role / Timing Role: Level-translating latch isolating 3.3 V core from 5 V bus; OE used for direction control, LE for data capture timing. Use Value: Eliminates discrete level shifters; overvoltage tolerance and bus hold simplify interface design and improve reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC573APWR | Lower VCC range (1.65–3.6 V); weaker drive (24 mA IOL); no bus hold | Requires external pull-ups on unused inputs; less suitable for noisy industrial environments | Preferred for ultra-low-voltage designs where 3.3 V margin is constrained |
| 74ALVC573PW | Same SO20 package; higher speed (tPLH ≤ 2.8 ns); identical bus hold and 5.5 V tolerance | Pin-compatible drop-in replacement with improved timing margin | Recommended for new designs requiring tighter propagation delay budgets |
Compared with SN74LVC573APWR, 74LVT573DB,112 offers stronger drive and integrated bus hold; versus 74ALVC573PW, it trades minor speed reduction for broader voltage tolerance and proven industrial qualification.
Availability
74LVT573DB,112 is available at Aetrix Electronics and suitable for microprocessor bus interfacing, memory address latching, I/O port expansion, and legacy-level translation requiring stable component supply across industrial production cycles.
Supply support for 74LVT573DB,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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and scalability for industrial and consumer applications.
The 74LVT family targets high-speed 3.3 V bus interface applications, emphasizing robustness in mixed-voltage systems, low-power operation, and compatibility with legacy TTL and CMOS architectures.
FAQ
What is the function of the LE and OE pins on the 74LVT573DB,112?
LE (pin 11) is the latch enable input: when HIGH, the device operates in transparent mode (Qn follows Dn); on HIGH-to-LOW transition, it captures and holds the Dn values. OE (pin 1) is the output enable input: when LOW, Q0–Q7 drive their latched values; when HIGH, all outputs enter high-impedance state. OE does not affect latch state.
Can the 74LVT573DB,112 safely interface with 5 V logic signals?
Yes. Inputs tolerate up to 5.5 V regardless of VCC level (2.7–3.6 V), allowing direct connection to 5 V buses without level shifters. Outputs swing rail-to-rail (0 V to VCC) and are not 5 V tolerant in drive mode, so external clamping or series resistance is required if driving 5 V inputs.
Does the 74LVT573DB,112 require external pull-up resistors on unused inputs?
No. Integrated bus hold circuitry actively maintains the last-valid logic state at each D input, eliminating the need for external pull-up or pull-down resistors. This reduces component count, PCB area, and potential noise coupling from resistor networks.
What thermal considerations apply to the 74LVT573DB,112 in continuous operation?
Maximum junction temperature is 150 °C. At full output loading (64 mA per output), total power dissipation reaches 500 mW. For reliable operation, maintain ambient temperature ≤85 °C and use adequate copper pour on VCC/GND pads. Thermal resistance θJA for SO20 is ~100 K/W; derate power linearly above 70 °C ambient.
74LVT573DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVT
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- D-Type Transparent Latch
- Circuit:
- 8:8
- Output Type:
- Tri-State
- Voltage - Supply:
- 2.7V ~ 3.6V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 2.7ns
- Current - Output High, Low:
- 32mA, 64mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74LVT573DB,112 FAQ
1.How can I place an order for 74LVT573DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT573DB,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 74LVT573DB,112 reliable?
The price and inventory of 74LVT573DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT573DB,112 is usually 5 days.
3.What payment methods are accepted for 74LVT573DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT573DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT573DB,112?
74LVT573DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT573DB,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 74LVT573DB,112?
For technical support, including 74LVT573DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT573DB,112 requirements.
6.How does Aetrix verify that 74LVT573DB,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT573DB,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 74LVT573DB,112 meets industry standards.
7.What is the process for return or replacement of 74LVT573DB,112?
All 74LVT573DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT573DB,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 74LVT573DB,112 part is unused and in its original packaging.
Return procedure for 74LVT573DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVT573DB,112 Tags
-
SN74HC573APWR
Texas Instruments
-
SN74HC573ADWR
Texas Instruments
-
SN74AHC573PWR
Texas Instruments
-
SN74HCT573DWR
Texas Instruments
-
SN74HC373N
Texas Instruments
-
SN74HC573AN
Texas Instruments
-
74VHC573MTCX
onsemi
-
MC74LCX573DTR2G
onsemi
-
74AUP1G373GW,125
Nexperia USA Inc.
-
SN74LVC1G373DCKR
Texas Instruments
-
SN74LVC1G373DBVR
Texas Instruments
-
NC7SZ373P6X
onsemi
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
