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Nexperia USA Inc. 74HC573PW,118
- Part No.:
- 74HC573PW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC573PW,118.pdf
- Description:
- IC D-TYPE TRANSP SGL 8:8 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:25,443
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Product details
Overview
74HC573PW,118 from Nexperia is an octal D-type transparent latch with 3-state outputs, used for data latching and bus isolation in microprocessor I/O port expansion. It operates from 2.0 V to 6.0 V, features active-HIGH latch enable (LE) and active-LOW output enable (OE), and supports -40 °C to +125 °C operation in TSSOP20 package.
For engineers reviewing the 74HC573PW,118 datasheet, 74HC573PW,118 pinout, 74HC573PW,118 application, or 74HC573PW,118 equivalent, key selection criteria include propagation delay (14–45 ns), 3-state output drive capability (±7.8 mA), input voltage compatibility (CMOS-level), latch transparency behavior, and thermal performance in thin-shrink packaging.
Technical Context
This device implements eight independent D-type latches with shared LE and OE controls. Latch operation is edge-triggered on LE HIGH-to-LOW transition, capturing data present one setup time prior; during LE HIGH, outputs follow inputs transparently. OE independently places all Q outputs in high-impedance state without affecting internal latch states.
Input clamp diodes allow safe interfacing with voltages exceeding VCC when current-limiting resistors are used. The logic family complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V), with HBM ESD rating >2000 V and CDM >1000 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - enables direct interface with 3.3 V and 5 V logic systems without level shifters |
| Propagation Delay (D→Q) | 14 ns (VCC = 6.0 V, CL = 50 pF) - supports high-speed bus handshaking up to ~35 MHz |
| Output Drive | ±7.8 mA (VCC = 4.5 V) - sufficient to drive standard TTL loads and multiple CMOS inputs |
| Input Thresholds | VIH = 3.15 V min (VCC = 4.5 V); VIL = 1.35 V max - ensures robust noise margin (>1.1 V) in mixed-signal environments |
| Operating Temperature | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications |
| Power Dissipation Cap | 500 mW (TSSOP20, derates 10.0 mW/K above 100 °C) - defines maximum continuous power under thermal constraints |
| Input Capacitance | 3.5 pF - minimizes loading on driving sources and preserves signal integrity in high-frequency traces |
Pinout & Package
TSSOP20 (SOT360-1) package: 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | 3-state output enable | Active-LOW global control - asserts high-impedance on all Q outputs without altering latch contents |
| 2 (VCC) | Positive supply | Primary power rail; must be decoupled locally to suppress switching noise coupling into logic paths |
| 3–10 (D0–D7) | Data inputs | Asynchronous inputs feeding each latch; accept CMOS-level signals across full VCC range |
| 11 (LE) | Latch enable | Active-HIGH control - enables transparency; falling edge captures and holds data at Dn inputs |
| 12–19 (Q0–Q7) | 3-state latch outputs | Non-inverting buffered outputs; tri-state when OE = HIGH, otherwise reflect stored latch state |
| 20 (GND) | Ground reference | Signal and power return path; requires low-impedance PCB connection to minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0–6.0 V operation allows single-part support of legacy 5 V and modern 3.3 V systems |
| Input clamp diodes | Enable safe interface with overvoltage signals (e.g., 12 V sensors) using external current-limiting resistors |
| Opposite-side I/O layout | D inputs on left, Q outputs on right - simplifies PCB routing in bus-oriented layouts with microcontrollers |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - ensures reliability in noisy industrial environments |
| Thermal enhancement | TSSOP20 package provides improved heat dissipation vs. SO20, supporting higher sustained output loading |
Applications
| Industrial PLC I/O Expansion | Microcontroller Parallel Bus Interface |
|---|---|
Use Scenario: Adding parallel digital input/output capability to a programmable logic controller mainboard using limited GPIO resources. IC Role / Device Role / Timing Role: Acts as bidirectional data latch between CPU address/data bus and field I/O modules; LE synchronized to bus write strobe, OE controlled by chip select decoding. Use Value: Enables 8-bit parallel data capture and output staging without CPU bus contention, reducing firmware overhead for real-time I/O handling. | Use Scenario: Connecting an 8-bit microcontroller (e.g., ATmega328P) to external memory-mapped peripherals such as LCD controllers or ADCs. IC Role / Device Role / Timing Role: Provides address/data bus demultiplexing and latching - holds address stable during memory access while freeing bus for data transfer. Use Value: Eliminates need for dedicated address latches; supports reliable timing margins with 14 ns D→Q delay at 6 V, compatible with sub-20 MHz MCU clocks. |
| Test Equipment Digital Pattern Generator | Legacy System Bus Isolation |
Use Scenario: Generating precise, synchronized digital stimulus patterns for IC functional testing in automated test equipment (ATE). IC Role / Device Role / Timing Role: Stores pattern words from FPGA or DAC interface; outputs driven onto DUT pins via OE-controlled 3-state buffers to prevent back-driving. Use Value: Ensures glitch-free pattern transitions with 13 ns OE→Q enable time and <5 ns output skew across all 8 bits. | Use Scenario: Isolating legacy ISA or PC/104 bus segments during system upgrades to prevent signal contention between new and legacy peripherals. IC Role / Device Role / Timing Role: Functions as bi-directional bus buffer - latches data from master side and presents it to slave side only when enabled, with OE controlling directionality. Use Value: Prevents bus conflicts during hot-plug events; ±7.8 mA drive strength matches TTL load requirements of vintage peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT573PW,118 | TTL-compatible inputs (VIH = 2.0 V min), identical pinout and function | Better interoperability with 5 V TTL logic families; slightly higher ICC at VCC = 5.5 V | Select when interfacing with legacy 5 V TTL outputs or mixed-voltage systems requiring guaranteed VIH recognition |
| SN74HC573PWR | Same logic function and 3-state behavior; TI package (TSSOP-20, PW suffix) matches Nexperia pinout | Identical electrical specs but different qualification standards (AEC-Q100 not claimed); RoHS profile differs | Use where TI supply chain preference or dual-sourcing strategy applies; verify thermal derating curve matches design margin |
Compared with 74HCT573PW,118, the 74HC573PW,118 offers superior noise immunity in CMOS-only systems, while SN74HC573PWR provides second-source assurance with identical timing but distinct manufacturing traceability and qualification scope.
Availability
74HC573PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller parallel bus interface, test equipment digital pattern generation, and legacy system bus isolation requiring stable component supply across extended temperature ranges.
Supply support for 74HC573PW,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with core expertise in energy-efficient and reliable standard products.
The 74HC573 belongs to Nexperia's HC logic family, designed for low-power, high-noise-immunity digital interfacing in industrial, automotive (qualified variants), and consumer applications requiring robust operation across wide voltage and temperature ranges.
FAQ
What is the minimum setup time required before the LE HIGH-to-LOW transition?
The minimum setup time (tsu) is 9 ns at VCC = 6.0 V and 13 ns at VCC = 4.5 V, measured from Dn input change to LE falling edge. This ensures reliable data capture; violating tsu risks metastability or incorrect latched values. Values are specified across -40 °C to +125 °C and validated per JEDEC JESD8C.
Can OE be toggled while LE is HIGH without corrupting latch contents?
Yes. OE controls only the output buffer stage and has no effect on internal latch states. When OE is HIGH, Q outputs go high-impedance regardless of LE state; when OE returns LOW, previously stored data reappears immediately. This enables dynamic bus sharing without disturbing latched data.
Does the TSSOP20 package require soldering of the exposed thermal pad?
No. The TSSOP20 (SOT360-1) package for 74HC573PW,118 does not include an exposed thermal pad. Unlike QFN packages, this variant uses standard leadframe construction; thermal management relies on PCB copper area connected to pins 2 (VCC) and 10 (GND) per recommended layout guidelines in the datasheet.
How does input clamping affect interfacing with 12 V sensor signals?
Internal clamp diodes allow safe connection of 12 V signals when series current-limiting resistors limit IIK to ≤±20 mA. For example, a 470 Ω resistor limits current to ~12.5 mA at 12 V, protecting inputs while enabling direct interface - eliminating external level translators in cost-sensitive industrial sensor nodes.
74HC573PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- 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:
- 2V ~ 6V
- Independent Circuits:
- 1
- Delay Time - Propagation:
- 14ns
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74HC573PW,118 FAQ
1.How can I place an order for 74HC573PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC573PW,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 74HC573PW,118 reliable?
The price and inventory of 74HC573PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC573PW,118 is usually 5 days.
3.What payment methods are accepted for 74HC573PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC573PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC573PW,118?
74HC573PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC573PW,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 74HC573PW,118?
For technical support, including 74HC573PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC573PW,118 requirements.
6.How does Aetrix verify that 74HC573PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HC573PW,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 74HC573PW,118 meets industry standards.
7.What is the process for return or replacement of 74HC573PW,118?
All 74HC573PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC573PW,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 74HC573PW,118 part is unused and in its original packaging.
Return procedure for 74HC573PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC573PW,118 Tags
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SN74HC573APWR
Texas Instruments
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SN74HC573ADWR
Texas Instruments
-
SN74AHC573PWR
Texas Instruments
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SN74HCT573DWR
Texas Instruments
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SN74HC373N
Texas Instruments
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SN74HC573AN
Texas Instruments
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74VHC573MTCX
onsemi
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MC74LCX573DTR2G
onsemi
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74AUP1G373GW,125
Nexperia USA Inc.
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SN74LVC1G373DCKR
Texas Instruments
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SN74LVC1G373DBVR
Texas Instruments
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NC7SZ373P6X
onsemi
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