74VHCT540A

Features:

 High Speed: t_PD = 5.4 ns (typ) at VCC = 5V
 Low Power Dissipation: I_CC = 4 mA (max) at T_A = 25°C
 Power down protection is provided on all inputs and outputs
 Pin and function compatible with 74HCT540


Pinout




Specifications

Supply Voltage (V_CC) ................................................................-0.5V to +7.0V
DC Input Voltage (V_IN) .............................................................-0.5V to +7.0V
DC Output Voltage (V_OUT)
(Note 3).....................................................................................-0.5V to +7.0V
(Note 4).............................................................................-0.5V to V_CC + 0.5V
Input Diode Current (I_IK).......................................................................-20 mA
Output Diode Current (I_OK)
(Note 5) ...............................................................................................±20 mA
DC Output Current (I_OUT).....................................................................±25 mA
DC V_CC/GND Current (I_CC)....................................................................±75 mA
Storage Temperature (T_STG)..................................................-65°C to +150°C
Lead Temperature (T_L)
(Soldering, 10 seconds) .........................................................................260°C


Description

The 74VHCT540A is an advanced high-speed CMOS device fabricated with silicon gate CMOS technology. It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.

The 74VHCT540A is an octal buffer/line driver designed to be employed as memory and address drivers, clock drivers and bus oriented transmitter/receivers.

This 74VHCT540A is similar in function to the VHCT240A while providing flow-through architecture (inputs on opposite side from outputs). This pinout arrangement makes this device especially useful as an output port for microprocessors, allowing ease of layout and greater PC board density.

Protection circuits of the 74VHCT540A ensure that 0V to 7V can be applied to the input and output (Note 1) pins without regard to the supply voltage. This device can be used to interface 3V to 5V systems and two supply systems such as battery backup. This circuit prevents device destruction due to mismatched supply and input voltages.