74AHCT245APW数据手册集成电路（IC）的缓冲器驱动器接收器收发器规格书PDF

描述 Description

The 74AHCT245A 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 74AHCT245A 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 3.0 ns at 5 V
• Typical VOL(p) < 0.8 V at Vcc = 5 V, Tamb = 25 °C
• Typical VOL(p) < 0.8 V at Vcc = 5 V, Tamb = 25 °
• 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 V
• CDM JESD22-C101E exceeds 2 kV

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