SN74HCT540

現行

具有 TTL 相容 CMOS 輸入和 3 態輸出的 8 通道、4.5-V 至 5.5-V 逆變器

立即訂購

產品規格表

document-pdfAcrobat SN54HCT540, SN74HCT540 datasheet (Rev. C) (英文)

SN74HCT540

現行

產品規格表

立即訂購

產品詳細資料

Technology family

HCT

Number of channels

8

IOL (max) (mA)

6

IOH (max) (mA)

-6

Supply current (max) (µA)

80

Input type

TTL-Compatible CMOS

Output type

3-State

Features

Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Technology family

HCT

Number of channels

8

IOL (max) (mA)

6

IOH (max) (mA)

-6

Supply current (max) (µA)

80

Input type

TTL-Compatible CMOS

Output type

3-State

Features

Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

SOIC (DW)

20

131.84 mm² (12.8 mm × 10.3 mm)

PDIP (N)

20

228.702 mm² (24.33 mm × 9.4 mm)

Operating Voltage Range of 4.5 V to 5.5 V
Low Power Consumption, 80-µA Max I_CC
Typical t_pd = 12 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)

Operating Voltage Range of 4.5 V to 5.5 V
Low Power Consumption, 80-µA Max I_CC
Typical t_pd = 12 ns
±6-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Inputs Are TTL-Voltage Compatible
High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)

These octal buffers and line drivers are designed to have the performance of the ’HCT240 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout.

The 3-state control gate is a 2-input NOR. If either output-enable (OE1\ or OE2\) input is high, all eight outputs are in the high-impedance state. The ’HCT540 devices provide inverted data at the outputs.

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.

These octal buffers and line drivers are designed to have the performance of the ’HCT240 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout.

The 3-state control gate is a 2-input NOR. If either output-enable (OE1\ or OE2\) input is high, all eight outputs are in the high-impedance state. The ’HCT540 devices provide inverted data at the outputs.

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.

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