SN74HCT540 Octal Buffers And Line Drivers With 3-State Outputs | TI.com

SN74HCT540
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Octal Buffers And Line Drivers With 3-State Outputs

Octal Buffers And Line Drivers With 3-State Outputs - SN74HCT540
Datasheet
 

Description

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 VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Features

  • Operating Voltage Range of 4.5 V to 5.5 V
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 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)

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) IOL (Max) (mA) IOH (Max) (mA) ICC (uA) Input type Output type Features Data rate (Mbps) Rating Package Group
SN74HCT540 Order now HCT     4.5     5.5     8     6     -6     80     TTL-Compatible CMOS     3-State     Balanced outputs
Very high speed (tpd 5-10ns)
Input clamp diode    
50     Catalog     PDIP | 20
SOIC | 20    
SN54HCT540 Samples not available HCT     4.5     5.5     8     6     -6     80     TTL-Compatible CMOS     3-State     Balanced outputs
Very high speed (tpd 5-10ns)    
50     Military     CDIP | 20