IDT74LVCH245A

Features:

• 0.5 MICRON CMOS Technology
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4 W typ. static)
• Rail-to-rail output swing for increased noise margin
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in SOIC, SSOP, QSOP, and TSSOP packages


Application

• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems


Pinout




Specifications

Symbol	Description	Max	Unit
VTERM	Terminal Voltage with Respect to GND	0.5 to +6.5	V
TSTG	Storage Temperature	65 to +150	°C
IOUT	DC Output Current	50 to +50	mA
IIK IOK	Continuous Clamp Current, VI < 0 or VO < 0	50	mA
ICC ISS	Continuous Current through each VCC or GND	±100	mA

NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational sections  of  this  specification is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.


Description

The IDT74LVCH245A octal bus transceiver is built using advanced dual metal CMOS technology. The device is designed for asynchronous communication between data buses. Data is transmitted from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the directioncontrol (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated.

The IDT74LVCH245A has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance.

The IDT74LVCH245A has "bus-hold" which retains the inputs' last state whenever the input goes to a high-impedance. This prevents floating inputs and eliminates the need for pull-up/down resistors. Inputs can be driven from either 3.3V or 5V devices. This feature allows the use of this device as a translator in a mixed 3.3V/5V system environment.