SN74AHCT540 Octal Buffers/Drivers With 3-State Outputs | TI.com

SN74AHCT540
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Octal Buffers/Drivers With 3-State Outputs

Octal Buffers/Drivers With 3-State Outputs - SN74AHCT540
Datasheet
 

Description

The ’AHCT540 octal buffers/drivers are ideal for driving bus lines or buffer memory address registers. These devices feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout.

The 3-state control gate is a two-input AND gate with active-low inputs so that if either output-enable (OE1 or OE2) input is high, all corresponding outputs are in the high-impedance state. The outputs provide inverted data when they are not in the high-impedance state.

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

  • Inputs Are TTL-Voltage Compatible
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

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
SN74AHCT540 Order now AHCT     4.5     5.5     8     8     -8     40     TTL-Compatible CMOS     Push-Pull     Balanced outputs
Very high speed (tpd 5-10ns)
Over-voltage tolerant inputs    
140     Catalog     PDIP | 20
SOIC | 20
SO | 20
SSOP | 20
TSSOP | 20
TVSOP | 20    
SN54AHCT540 Samples not available AHCT     4.5     5.5     8     8     -8     40     TTL-Compatible CMOS     Push-Pull     Balanced outputs
Very high speed (tpd 5-10ns)
Over-voltage tolerant inputs    
140     Military     CDIP | 20