SN74AHCT573PWR
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Texas Instruments SN74AHCT573PWR

Manufacturer No:
SN74AHCT573PWR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC OCT TRNSP D-TYP LATCH 20TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The SN74AHCT573PWR is an octal transparent D-type latch produced by Texas Instruments. This device is part of the AHCT series, which is designed for high-speed and low-power applications. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs. The device also features a buffered output-enable (OE) input that can place the eight outputs in either a normal logic state or a high-impedance state, making it suitable for bus-driven applications.

Key Specifications

Parameter Unit Min Typ Max
VCC (Supply Voltage) V 4.5 5.5
VIH (High-level Input Voltage) V 3.85
VIL (Low-level Input Voltage) V 1.65
IOH (High-level Output Current) µA -8
tpd (Propagation Delay, D to Q) ns 5.1 7 9.5
tpd (Propagation Delay, LE to Q) ns 5.6 7.5 9.5
tw (Pulse Duration, LE High) ns 5
tsu (Setup Time, Data before LE↓) ns 3.5
th (Hold Time, Data after LE↓) ns 1.5
RθJA (Junction-to-ambient Thermal Resistance) °C/W 116.8

Key Features

  • Inputs are TTL-voltage compatible.
  • Latch-up performance exceeds 250mA per JESD 17.
  • Buffered output-enable (OE) input for high-impedance state control.
  • High drive capability to drive bus lines without interface or pull-up components.
  • Available in various packages including DB (SSOP), DGV (TVSOP), DW (SOIC), N (PDIP), and PW (TSSOP).

Applications

  • Servers
  • PCs and notebooks
  • Network switches
  • Wearable health and fitness devices
  • Telecom infrastructures
  • Electronic points-of-sale

Q & A

  1. What is the primary function of the SN74AHCT573PWR?

    The primary function is to act as an octal transparent D-type latch, where the Q outputs follow the D inputs when the LE input is high, and the Q outputs are latched when LE is low.

  2. What is the purpose of the OE input?

    The OE input is used to place the eight outputs in either a normal logic state or a high-impedance state.

  3. What are the typical propagation delays for this device?

    The propagation delay from D to Q is typically 7 ns, and from LE to Q is typically 7.5 ns, with a load capacitance of 15 pF.

  4. What are the recommended operating conditions for VCC?

    The recommended supply voltage (VCC) is between 4.5V and 5.5V.

  5. What is the thermal resistance of the PW package?

    The junction-to-ambient thermal resistance (RθJA) for the PW package is 116.8 °C/W.

  6. What are the setup and hold times for the data input relative to the LE input?

    The setup time is 3.5 ns, and the hold time is 1.5 ns.

  7. Is the SN74AHCT573PWR compatible with TTL voltage levels?

    Yes, the inputs are TTL-voltage compatible.

  8. What are some common applications for this device?

    Common applications include servers, PCs and notebooks, network switches, wearable health and fitness devices, telecom infrastructures, and electronic points-of-sale.

  9. What packages is the SN74AHCT573 available in?

    The device is available in DB (SSOP), DGV (TVSOP), DW (SOIC), N (PDIP), and PW (TSSOP) packages.

  10. How does the high-impedance state of the outputs benefit the application?

    The high-impedance state allows the outputs to neither load nor drive the bus lines significantly, which is beneficial for bus-driven applications.

Product Attributes

Logic Type:D-Type Transparent Latch
Circuit:8:8
Output Type:Tri-State
Voltage - Supply:4.5V ~ 5.5V
Independent Circuits:1
Delay Time - Propagation:1ns
Current - Output High, Low:8mA, 8mA
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:20-TSSOP
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Similar Products

Part Number SN74AHCT573PWR SN74ACT573PWR SN74AHC573PWR SN74AHCT373PWR SN74AHCT573DWR SN74AHCT573PW
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active
Logic Type D-Type Transparent Latch D-Type Transparent Latch D-Type Transparent Latch D-Type Transparent Latch D-Type Transparent Latch D-Type Transparent Latch
Circuit 8:8 8:8 8:8 8:8 8:8 8:8
Output Type Tri-State Tri-State Tri-State Tri-State Tri-State Tri-State
Voltage - Supply 4.5V ~ 5.5V 4.5V ~ 5.5V 2V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V 4.5V ~ 5.5V
Independent Circuits 1 1 1 1 1 1
Delay Time - Propagation 1ns 6ns 1ns 1ns 1ns 1ns
Current - Output High, Low 8mA, 8mA 24mA, 24mA 8mA, 8mA 8mA, 8mA 8mA, 8mA 8mA, 8mA
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 20-TSSOP (0.173", 4.40mm Width) 20-SOIC (0.295", 7.50mm Width) 20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-TSSOP 20-TSSOP 20-TSSOP 20-TSSOP 20-SOIC 20-TSSOP

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