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NXP Semiconductors 74AHC573PW,112
- Part No.:
- 74AHC573PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Latches
- Package:
- -
- Datasheet:
-
74AHC573PW,112.pdf
- Description:
- IC OCTAL D TRANSP LATCH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,787
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Product details
Overview
74AHC573PW,112 from Nexperia is an octal D-type transparent latch with 3-state outputs, designed for bus interface and data buffering in digital systems. It features independent latch enable (LE) and output enable (OE) controls, operates across 2.0 V to 5.5 V supply, supports -40 °C to +125 °C ambient range, and provides overvoltage-tolerant inputs up to 5.5 V - enabling mixed-voltage translation in microcontroller I/O expansion applications.
For engineers reviewing the 74AHC573PW,112 datasheet, 74AHC573PW,112 pinout, 74AHC573PW,112 application, or 74AHC573PW,112 equivalent, this device serves as a high-speed, low-power latching buffer for address/data bus isolation, memory interfacing, and peripheral control where precise timing control, 3-state drive capability, and CMOS-level compatibility are required.
Technical Context
The 74AHC573PW,112 implements eight independent D-type latches with transparent mode when LE is HIGH and edge-triggered capture on LE HIGH-to-LOW transition. Its 3-state outputs are controlled solely by OE (active LOW), with no effect on internal latch state - enabling concurrent latching and output disabling.
It uses standard CMOS input thresholds (VIH ≥ 3.85 V at VCC = 5.5 V; VIL ≤ 1.65 V), offers Schmitt-trigger action on all inputs, and maintains balanced propagation delays (tpd ≤ 6.8 ns at VCC = 5 V, CL = 15 pF). Input overvoltage tolerance (up to 5.5 V regardless of VCC) allows safe interfacing between 3.3 V logic and 5 V buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 2.0 V to 5.5 V - supports single-supply operation across 3.3 V and 5 V systems without level shifters. |
| Propagation delay (D→Q) | ≤ 6.8 ns at VCC = 5 V, CL = 15 pF - enables reliable timing in high-speed digital interfaces up to ~100 MHz. |
| Latch set-up/hold time | tsu = 3.5 ns, th = 1.5 ns at VCC = 5 V - ensures robust data capture from fast microcontroller or FPGA GPIOs. |
| Output drive strength | ±8 mA at VCC = 4.5 V - sufficient to drive 15 pF loads across PCB traces or multiple CMOS inputs. |
| Input overvoltage tolerance | Up to 5.5 V independent of VCC - permits direct connection to 5 V signals while powered from 3.3 V, eliminating external translators. |
| Operating temperature | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded control environments. |
| ESD protection | HBM > 2000 V, CDM > 1000 V - enhances robustness during board assembly and field operation. |
Pinout & Package
TSSOP20 package (SOT360-1): plastic thin shrink small outline, 20-lead, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable input | Active LOW control: drives all Q outputs to high-impedance when HIGH; no effect on latch state. |
| 2–9 (D0–D7) | Data inputs | Asynchronous inputs feeding respective latches; tolerate up to 5.5 V regardless of VCC. |
| 10 (GND) | Ground reference | 0 V return path for supply and signal integrity; decoupling capacitor placement critical near this pin. |
| 11 (LE) | Latch enable input | Active HIGH: enables transparency; HIGH-to-LOW edge captures Dn values into latches. |
| 12–19 (Q0–Q7) | 3-state data outputs | Reflect latched Dn values when OE = LOW; tri-state when OE = HIGH - enables bus sharing. |
| 20 (VCC) | Power supply | Primary supply rail (2.0–5.5 V); requires local 100 nF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply voltage range | 2.0 V to 5.5 V operation eliminates need for separate voltage rails in mixed-signal boards. |
| Overvoltage-tolerant inputs | Inputs withstand 5.5 V even at VCC = 2.0 V - enables direct 5 V ↔ 3.3 V bus interfacing without external components. |
| Schmitt-trigger inputs | All inputs include hysteresis - improves noise immunity on slow or noisy control lines like pushbuttons or long traces. |
| CMOS low power dissipation | ICC ≤ 4.0 μA typical at VCC = 5.5 V - reduces static power in battery-backed or always-on subsystems. |
| Functionally identical to 74AHC373 | Pins and logic match 74AHC373 - allows drop-in replacement in existing designs using that legacy part. |
Applications
| Microcontroller I/O Expansion | Memory Address Latching |
|---|---|
|
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU with limited native parallel I/O for driving LED arrays and sensor readouts. IC Role / Device Role / Timing Role: Acts as an 8-bit bidirectional data latch, capturing parallel output writes from MCU and presenting stable levels to peripherals during bus release. Use Value: Enables deterministic timing control via LE strobe synchronized to MCU write cycle, avoiding metastability in asynchronous peripheral handshaking. |
Use Scenario: Latching 8-bit address segments in an 8051-based system interfacing external SRAM and EPROM. IC Role / Device Role / Timing Role: Captures lower-address byte during ALE pulse, holding it stable while upper address and data share same bus lines. Use Value: Eliminates need for dedicated address latches per memory chip, reducing BOM count and PCB area in cost-sensitive embedded controllers. |
| Industrial Bus Isolation | Digital Test Equipment Interface |
|
Use Scenario: Isolating Modbus RTU master controller from noisy 24 V field-side sensors and actuators via optocoupled RS-485 transceivers. IC Role / Device Role / Timing Role: Buffers and latches command/status bits between isolated logic domains, with OE used for direction control. Use Value: Prevents bus contention during level-shifted communication; overvoltage tolerance protects against induced transients on isolated side. |
Use Scenario: Providing programmable stimulus and response capture in automated test fixtures for PCB functional validation. IC Role / Device Role / Timing Role: Captures parallel test vector outputs from FPGA pattern generator and holds them stable during DUT sampling window. Use Value: Guarantees setup/hold compliance for DUT inputs under varying clock skew; 3-state outputs allow shared test bus reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC373PW,112 | Identical pinout, logic function, and DC specs; differs only in internal layout and minor AC parameter tolerances. | No functional change - validated for same bus-hold and latch-enable timing use cases. | Select when legacy design documentation references 74AHC373 or when sourcing continuity is prioritized over latest revision. |
| SN74LVC573APW | Lower VCC range (1.65–3.6 V); TTL-compatible inputs; higher ICC (max 10 μA); slightly faster tpd (≤ 5.3 ns @ 3.3 V). | Not suitable for 5 V systems; requires level-shifting if interfacing with 5 V peripherals. | Prefer for new 3.3 V-only designs requiring lowest possible propagation delay and tighter output skew. |
Compared with 74AHC373PW,112, the 74AHC573PW,112 offers identical functionality with updated ESD ratings and derating curves; versus SN74LVC573APW, it trades 3.3 V speed for universal 2.0–5.5 V interoperability and overvoltage resilience.
Availability
74AHC573PW,112 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, memory address latching, and industrial bus isolation requiring stable component supply across extended temperature ranges.
Supply support for 74AHC573PW,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 miniaturization.
The 74AHC573 belongs to Nexperia's advanced high-speed CMOS logic family, engineered for low-power, wide-voltage digital interfacing in industrial, computing, and communications equipment.
FAQ
Can the 74AHC573PW,112 operate reliably at 2.0 V supply?
Yes. The device is fully specified from 2.0 V to 5.5 V, with guaranteed VIH ≥ 1.5 V and VIL ≤ 0.5 V at VCC = 2.0 V, and propagation delay ≤ 14.0 ns (CL = 50 pF). All DC and AC parameters meet datasheet limits across this range, making it suitable for ultra-low-voltage battery-powered systems.
What is the maximum clock frequency supported for latch enable toggling?
The minimum LE pulse width is 5.0 ns at VCC = 4.5–5.5 V, implying theoretical maximum toggle rate of 100 MHz. However, practical maximum depends on system timing margins: for reliable capture with 3.5 ns setup/1.5 ns hold, sustained operation above 25 MHz requires careful PCB layout and matched trace lengths to minimize skew.
Does the TSSOP20 package require thermal pad soldering?
No. The SOT360-1 package has no exposed thermal pad; its thermal performance relies on standard PCB copper pour under the body. The datasheet confirms no electrical or mechanical requirement to solder any pad - unlike QFN variants - simplifying assembly for standard reflow processes.
How does overvoltage tolerance work on the inputs?
Input pins tolerate up to 5.5 V regardless of VCC due to internal clamping diodes and oxide-thickness design. This allows safe connection to 5 V signals while VCC = 3.3 V, provided input current remains within ±20 mA (per IEC 60134 limiting values), eliminating external protection components in mixed-voltage bus interfaces.
74AHC573PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Circuit:
- -
- Output Type:
- -
- Voltage - Supply:
- -
- Independent Circuits:
- -
- Delay Time - Propagation:
- -
- Current - Output High, Low:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AHC573PW,112 FAQ
1.How can I place an order for 74AHC573PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC573PW,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 74AHC573PW,112 reliable?
The price and inventory of 74AHC573PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC573PW,112 is usually 5 days.
3.What payment methods are accepted for 74AHC573PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC573PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC573PW,112?
74AHC573PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC573PW,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 74AHC573PW,112?
For technical support, including 74AHC573PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC573PW,112 requirements.
6.How does Aetrix verify that 74AHC573PW,112 is sourced from the original manufacturer or authorized distributors?
All 74AHC573PW,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 74AHC573PW,112 meets industry standards.
7.What is the process for return or replacement of 74AHC573PW,112?
All 74AHC573PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC573PW,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 74AHC573PW,112 part is unused and in its original packaging.
Return procedure for 74AHC573PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHC573PW,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
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