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SN74LVCH32245AZKER

32-Bit Bus Transceiver With 3-State Output

Packaging

Package | PIN: ZKE | 96
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $3.37
10-24 $3.03
25-99 $2.82
100-249 $2.47
250-499 $2.32
500-749 $1.97
750-999 $1.66
1000+ $1.59

Features

  • Memeber of the Texas Instruments Widebus+™ Family
  • Operate From 1.65 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 4 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA= 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2 V at VCC = 3.3 V, TA = 25°C
  • Ioff Supports Partial-Power-Down Mode Operation
  • Supports Mixed-Mode Signal Operation on All Ports (5-V Input and Output Voltages With 3.3-V VCC)
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Other Products to Consider:
       SN74LVC32245
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

Widebus+ is a trademark of Texas Instruments.

Texas Instruments  SN74LVCH32245AZKER

This 32-bit (quad-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation.

The SN74LVCH32245A is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements.

This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so that the buses are effectively isolated.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. The bus-hold circuitry is part of the input circuit and is not disabled by OE\ or DIR.