My Inquiry
My Account
Diodes Incorporated 74LVC373AT20-13
.jpg)
- Part No.:
- 74LVC373AT20-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Latches
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC373AT20-13.pdf
- Description:
- IC D-TYPE TRANSP SGL 8:8 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC373AT20-13 from Diodes Incorporated is an octal transparent D-type latch with 3-state outputs in TSSOP-20 package, operating from 1.65V to 3.6V supply, supporting 5.5V-tolerant inputs and 24mA output drive at 3.0V, used for bus driving and signal isolation in notebook and peripheral interfaces.
For engineers reviewing the 74LVC373AT20-13 datasheet, 74LVC373AT20-13 pinout, 74LVC373AT20-13 application, or 74LVC373AT20-13 equivalent, key selection criteria include latch-enable timing (tSU = 2.0 ns min @ 3.3V), 3-state enable/disable speed (tEN/tDIS = 4.1 ns typ @ 3.3V), IOFF-enabled partial power-down capability, and mixed-voltage interface compatibility.
Technical Context
This device implements eight independent D-type transparent latches with asynchronous 3-state control via separate OE and LE inputs. Latch operation is edge-independent: Q follows D while LE is high, and holds D state when LE transitions low - enabling synchronous data capture without clock edges.
The IOFF circuit disables outputs during power-down to prevent backflow current, and Schmitt-trigger inputs ensure noise immunity on control lines. All I/O pins tolerate up to 5.5V regardless of VCC, allowing direct interfacing with 5V logic while powered from 1.8V or 3.3V rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 3.6V - supports dual-rail systems and low-power portable designs |
| Input Voltage Tolerance | Up to 5.5V - enables direct connection to legacy 5V buses without level shifters |
| Output Drive Strength | ±24mA at VCC = 3.0V - sufficient to drive multiple CMOS loads or short PCB traces |
| IOFF Leakage Current | ±10 µA max - prevents damaging current flow during partial power-down sequences |
| tPD (D→Q) | 3.8 ns typical @ 3.3V - ensures sub-5ns data propagation for high-speed bus buffering |
| tSU (D→LE) | 2.0 ns minimum @ 3.3V - defines minimum setup time before LE assertion for reliable latching |
| ESD Rating (HBM) | 2000V - exceeds JEDEC JESD22-A114, suitable for handling in standard assembly environments |
Pinout & Package
TSSOP-20 package (6.4mm × 6.5mm × 1.2mm, 0.65mm pitch) with exposed pad not electrically connected; RoHS-compliant, halogen-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-low 3-state output enable - independent of latch state, allows bus sharing without data corruption |
| 2,5,6,9,12,15,16,19 | Q1–Q8 | Latched output terminals - high-impedance when OE = high, driven low/high when OE = low |
| 3,4,7,8,13,14,17,18 | D1–D8 | Data inputs - transparently passed to Q outputs when LE = high; sampled on LE falling edge |
| 10 | GND | Ground reference - must be connected to system ground plane for stable noise margin and thermal dissipation |
| 11 | LE | Latch-enable control - high enables transparency; low captures and holds D-input state |
| 20 | VCC | Power supply - decoupling capacitor (0.1µF ceramic) required within 5mm of pin for switching noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| IOFF Partial Power-Down Support | Enables safe hot-insertion and multi-rail sequencing by disabling outputs when VCC = 0V |
| 5.5V-Tolerant Inputs | Allows direct interfacing with 5V logic families while operating from 1.65–3.6V supplies |
| Schmitt-Trigger Input Buffers | Provides >0.5V hysteresis on LE and OE pins, rejecting noise on slow or noisy control signals |
| Low Dynamic Ground Bounce | VOLP < 0.8V @ 3.3V - minimizes simultaneous switching noise affecting adjacent digital circuits |
| High-Drive 3-State Outputs | 24mA sink/source capability enables direct termination of stubbed bus lines without external resistors |
Applications
| PC Notebook Memory Bus Interface | Industrial PLC I/O Expansion Module |
|---|---|
Use Scenario: Isolating DDR memory address/control lines between CPU and memory controller during sleep mode. IC Role / Device Role / Timing Role: Octal latch buffers address bits with synchronized LE control and OE-gated 3-state isolation. Use Value: Enables clean power gating of memory subsystems using IOFF, eliminating leakage paths and reducing standby current by >90%. |
Use Scenario: Expanding digital input channels on a modular PLC base unit with isolated field-side voltage domains. IC Role / Device Role / Timing Role: Level-translating and latching 24V industrial sensor signals into 3.3V logic domain via resistor-divider + Schmitt input conditioning. Use Value: 5.5V-tolerant inputs accept conditioned 24V signals directly; tSU/tH specs guarantee reliable sampling under EMI-prone factory floor conditions. |
| USB Peripheral Hub Controller Interface | Automotive Infotainment Display Backlight Control |
Use Scenario: Buffering USB 2.0 upstream/downstream control signals (e.g., SUSPEND#, RESET#) across voltage domains. IC Role / Device Role / Timing Role: Transparent latch holding control states during USB suspend/resume transitions, with OE enabling shared bus arbitration. Use Value: Sub-5ns tPD ensures timing compliance with USB 2.0 protocol handshake windows; 3-state outputs prevent bus contention during enumeration. |
Use Scenario: Driving LED backlight enable lines from a low-voltage MCU to high-current LED drivers in automotive display clusters. IC Role / Device Role / Timing Role: Latching PWM dimming commands and enabling/disabling backlight drivers via OE-controlled 3-state isolation. Use Value: ±24mA drive strength eliminates need for discrete buffer transistors; IOFF protects driver ICs during MCU reset or brown-out events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC373APWR (TI) | Identical logic function and pinout; slightly higher ICC (max 40µA vs 10µA) and lower tPD (3.5ns typ @ 3.3V) | Same bus-driving use cases; tighter timing margin but higher static power in always-on modules | Select when sub-3.5ns propagation delay is critical and supply current budget allows +30µA increase |
| 74ALVC373PW,118 (Nexperia) | Wider VCC range (1.2–3.6V); lower drive (±24mA only at VCC ≥ 2.7V); no IOFF support | Not suitable for partial power-down systems; requires external isolation for hot-swap scenarios | Choose only for ultra-low-voltage (1.2V) designs where IOFF is unnecessary and timing slack exists |
Compared with SN74LVC373APWR, the 74LVC373AT20-13 offers superior power-down safety via IOFF but trades 0.3ns in tPD; versus 74ALVC373PW, it delivers guaranteed 24mA drive down to 1.65V and essential backflow protection for automotive and industrial power sequencing.
Availability
74LVC373AT20-13 is available at Aetrix Electronics and suitable for PC notebook memory interfaces, industrial PLC I/O expansion, USB hub control logic, and automotive infotainment backlight management requiring stable component supply and long-term lifecycle assurance.
Supply support for 74LVC373AT20-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient components for computing, industrial, and automotive markets.
The 74LVC373A belongs to Diodes' LVC logic family, engineered for low-voltage mixed-signal interfacing with robust ESD protection, wide supply tolerance, and partial power-down capability - targeting space-constrained, thermally sensitive portable and industrial systems.
FAQ
What is the maximum operating temperature for continuous use?
The 74LVC373AT20-13 is rated for continuous operation from –40°C to +125°C ambient temperature. Junction temperature must remain ≤150°C; with θJA = 74°C/W in TSSOP-20, sustained 24mA output loading at 3.3V requires ≤25°C ambient or forced airflow to avoid thermal derating.
Can OE and LE be tied together for simplified control?
No - OE and LE serve independent functions: LE controls data capture (transparent/latched), while OE controls output driver state (active/high-Z). Tying them eliminates independent bus arbitration and risks metastability during transitions; Diodes recommends separate routing with proper timing margins per the function table.
Does this device support hot-swap insertion into a live 3.3V bus?
Yes - IOFF circuitry actively disables outputs when VCC drops below ~0.8V, preventing backdrive current from bus lines into the device. However, 5.5V-tolerant inputs remain functional during insertion, making it suitable for controlled hot-swap applications with appropriate current-limiting design on OE/LE control lines.
Is the TSSOP-20 package lead-free and RoHS compliant?
Yes - the 74LVC373AT20-13 is fully RoHS 2 compliant (2011/65/EU), totally lead-free, and halogen/antimony free ("Green" per Diodes' AP02001 definition), with bromine/chlorine <900ppm each and antimony <1000ppm in compound form.
74LVC373AT20-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- D-Type Transparent Latch
- Circuit:
- 8:8
- Output Type:
- Tri-State
- Voltage - Supply:
- 1.65V ~ 3.6V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 4.4ns
- Current - Output High, Low:
- 24mA, 24mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVC373AT20-13 FAQ
1.How can I place an order for 74LVC373AT20-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC373AT20-13 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 74LVC373AT20-13 reliable?
The price and inventory of 74LVC373AT20-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC373AT20-13 is usually 5 days.
3.What payment methods are accepted for 74LVC373AT20-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC373AT20-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC373AT20-13?
74LVC373AT20-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC373AT20-13 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 74LVC373AT20-13?
For technical support, including 74LVC373AT20-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC373AT20-13 requirements.
6.How does Aetrix verify that 74LVC373AT20-13 is sourced from the original manufacturer or authorized distributors?
All 74LVC373AT20-13 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 74LVC373AT20-13 meets industry standards.
7.What is the process for return or replacement of 74LVC373AT20-13?
All 74LVC373AT20-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC373AT20-13, 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 74LVC373AT20-13 part is unused and in its original packaging.
Return procedure for 74LVC373AT20-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC373AT20-13 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…
