SN74LVCH8T245PW
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Texas Instruments SN74LVCH8T245PW

Manufacturer No:
SN74LVCH8T245PW
Manufacturer:
Texas Instruments
Package:
Tube
Description:
IC TRANSLATION TXRX 5.5V 24TSSOP
Delivery:
Payment:
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Product Introduction

Overview

The SN74LVC8T245 is an eight-bit non-inverting bus transceiver produced by Texas Instruments. This device is designed with configurable dual power supply rails, enabling bidirectional voltage level translation. It operates with VCCA and VCCB set at any voltage between 1.65 V and 5.5 V, making it suitable for universal low-voltage bidirectional translation between various voltage nodes such as 1.8 V, 2.5 V, 3.3 V, and 5.5 V. The device is optimized for asynchronous communication between two data buses and features control inputs (DIR and OE) that activate or place the output ports into high-impedance mode.

Key Specifications

Parameter Unit Min Max Notes
Operating Temperature Range °C -40 85
VCCA and VCCB Voltage Range V 1.65 5.5
Low-level Output Current (IOL) mA 4 (1.65 V to 1.95 V) 32 (4.5 V to 5.5 V) Varying with voltage range
Input Transition Rise or Fall Rate (Δt/Δv) ns/V 5 (4.5 V to 5.5 V) 20 (1.65 V to 1.95 V) Varying with voltage range
Latch-up Performance mA 100 Per JESD 78, class II
ESD Protection V 4000 (Human-Body Model) 1000 (Charged-Device Model) Per JESD 22
Package Types DBV, DBQ, PW, DGV, RHL Different package options available

Key Features

  • Control inputs VIH/VIL levels are referenced to VCCA voltage
  • VCC isolation feature – if either VCC input is at GND, all outputs are in the high-impedance state
  • Fully configurable dual-rail design allows each port to operate over the full 1.65-V to 5.5-V power-supply range
  • Latch-up performance exceeds 100 mA per JESD 78, class II
  • ESD protection exceeds JESD 22 – 4000-V Human-Body Model, 100-V Machine Model, 1000-V Charged-Device Model
  • Partial-power-down applications using Ioff circuitry to prevent damaging current backflow

Applications

  • Personal electronic devices
  • Industrial applications
  • Enterprise systems
  • Telecom equipment

Q & A

  1. What is the primary function of the SN74LVC8T245?

    The SN74LVC8T245 is an eight-bit non-inverting bus transceiver designed for bidirectional voltage level translation between two data buses.

  2. What is the voltage range for VCCA and VCCB?

    VCCA and VCCB can operate at any voltage between 1.65 V and 5.5 V.

  3. How does the direction-control (DIR) input work?

    The DIR input controls the direction of data transmission. A high DIR allows data transmission from A to B, while a low DIR allows data transmission from B to A.

  4. What is the purpose of the output-enable (OE) input?

    The OE input activates or places the output ports into high-impedance mode. When OE is low, the outputs are enabled; when OE is high, the outputs are in high-impedance state.

  5. What is the VCC isolation feature?

    If either VCC input is at GND, all outputs are in the high-impedance state, ensuring safe operation during power-up or power-down.

  6. What kind of ESD protection does the SN74LVC8T245 have?

    The device has ESD protection exceeding JESD 22 standards, including 4000-V Human-Body Model, 100-V Machine Model, and 1000-V Charged-Device Model.

  7. Can the SN74LVC8T245 be used in partial-power-down applications?

    Yes, the device is fully specified for partial-power-down applications using Ioff circuitry to prevent damaging current backflow.

  8. What are the typical applications for the SN74LVC8T245?

    The device is suitable for personal electronic devices, industrial applications, enterprise systems, and telecom equipment.

  9. What are the available package types for the SN74LVC8T245?

    The device is available in various package types including DBV, DBQ, PW, DGV, and RHL.

  10. What is the operating temperature range for the SN74LVC8T245?

    The operating temperature range is from -40°C to 85°C.

Product Attributes

Logic Type:Translation Transceiver
Number of Elements:2
Number of Bits per Element:8
Input Type:- 
Output Type:3-State
Current - Output High, Low:32mA, 32mA
Voltage - Supply:1.65V ~ 5.5V
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:24-TSSOP
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Similar Products

Part Number SN74LVCH8T245PW SN74LVCH8T245PWR
Manufacturer Texas Instruments Texas Instruments
Product Status Active Active
Logic Type Translation Transceiver Translation Transceiver
Number of Elements 2 2
Number of Bits per Element 8 8
Input Type - -
Output Type 3-State 3-State
Current - Output High, Low 32mA, 32mA 32mA, 32mA
Voltage - Supply 1.65V ~ 5.5V 1.65V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount
Package / Case 24-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 24-TSSOP 24-TSSOP

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