SN74AUCH245

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具有三态输出的八通道总线收发器

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数据表

document-pdfAcrobat SN74AUCH245 数据表 (英语)

SN74AUCH245

正在供货

数据表

立即订购

产品详情

Number of channels

8

IOL (max) (mA)

9

IOH (max) (mA)

-9

Input type

CMOS

Output type

CMOS

Features

Balanced outputs, Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns)

Technology family

AUC

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Number of channels

8

IOL (max) (mA)

9

IOH (max) (mA)

-9

Input type

CMOS

Output type

CMOS

Features

Balanced outputs, Bus-hold, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns)

Technology family

AUC

Rating

Catalog

Operating temperature range (°C)

-40 to 85

VQFN (RGY)

20

15.75 mm² (4.5 mm × 3.5 mm)

Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
I_off Supports Partial-Power-Down Mode Operation
Sub 1-V Operable
Max t_pd of 2 ns at 1.8 V
Low Power Consumption, 20-µA Max I_CC
±8-mA Output Drive at 1.8 V
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
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)

Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
I_off Supports Partial-Power-Down Mode Operation
Sub 1-V Operable
Max t_pd of 2 ns at 1.8 V
Low Power Consumption, 20-µA Max I_CC
±8-mA Output Drive at 1.8 V
Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
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)

This octal bus transceiver is operational at 0.8-V to 2.7-V V_CC, but is designed specifically for 1.65-V to 1.95-V V_CC operation.

The SN74AUCH245 is designed for asynchronous communication between data buses. The device transmits data 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 the buses are effectively isolated.

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

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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

This octal bus transceiver is operational at 0.8-V to 2.7-V V_CC, but is designed specifically for 1.65-V to 1.95-V V_CC operation.

The SN74AUCH245 is designed for asynchronous communication between data buses. The device transmits data 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 the buses are effectively isolated.

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

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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

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