描述 Description

The 74LV245AT is an 8-bit transceiver with 3-state outputs. The device features an output enable (OE) and send/receive (DIR) for direction control. A HIGH on (OE) causes the outputs to assume a high-impedance OFF-state.
The 74LV245AT is designed to operate over a VCC range from 4.5 V to 5.5 V. The inputs are TTL compatible, which allows the device to be used to translate from 3.3 V to 5 V.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
This device is fully specified for partial Power-down applications using IOFF. The IOFF circuitry disables the output, preventing the damaging backflow current through the device when it is powered down.

特性 Features

? Direct interface with TTL levels
? Supply voltage range from 4.5 V to 5.5 V
? Typical tpd of 3.1 ns at 5 V
? Typical VOL(p)< 0.8 V at VCC = 5 V, Tamb = 25 °C
? Typical VOH(v)< 0.8 V at VCC = 5 V, Tamb = 25 °C
? Supports mixed-mode voltage operation on all ports
? IOFF circuitry provides partial Power-down mode operation
? Latch-up performance exceeds 250 mA per JESD 78 Class II
? ESD protection:
? HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 3 kV
? MM JESD22-A115-A exceeds 200 VMM JESD22-A115-A exceeds 200 V
? CDM JESD22-C101E exceeds 2 kV

? Multiple package options
? Specified from -40 °C to +85 °C and from -40 °C to +125 °C