74AVC4TD245集成电路（IC）的转换器电平移位器规格书PDF中文资料

1 General description

The 74AVC4TD245 is a 4-bit, dual supply transceiver that enables bidirectional level

translation. It features eight 1-bit input-output ports (An and Bn), four direction control

inputs (DIR1, DIR2, DIR3 and DIR4), an output enable input (OE) and dual supply pins

(VCC(A) and VCC(B)). Both VCC(A) and VCC(B) can be supplied at any voltage between

0.8 V and 3.6 V making the device suitable for translating between any of the low voltage

nodes (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V). Pins An, OE and DIRn are referenced

to VCC(A) and pins Bn are referenced to VCC(B). A HIGH on DIRn allows transmission from

An to Bn and a LOW on DIRn allows transmission from Bn to An. The output enable input

(OE) can be used to disable the outputs so the buses are effectively isolated.

The device is fully specified for partial power-down applications using IOFF. The IOFF

circuitry disables the output, preventing any damaging backflow current through the

device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at

GND level, both An and Bn are in the high-impedance OFF-state.

2 Features and benefits

• Wide supply voltage range:

– VCC(A): 0.8 V to 3.6 V

– VCC(B): 0.8 V to 3.6 V

• Complies with JEDEC standards:

– JESD8-12 (0.8 V to 1.3 V)

– JESD8-11 (0.9 V to 1.65 V)

– JESD8-7 (1.2 V to 1.95 V)

– JESD8-5 (1.8 V to 2.7 V)

– JESD8-B (2.7 V to 3.6 V)

• ESD protection:

– HBM JESD22-A114E Class 3B exceeds 8000 V

– MM JESD22-A115-A exceeds 200 V

– CDM JESD22-C101C exceeds 1000 V

• Maximum data rates:

– 380 Mbit/s (≥ 1.8 V to 3.3 V translation)

– 200 Mbit/s (≥ 1.1 V to 3.3 V translation)

– 200 Mbit/s (≥ 1.1 V to 2.5 V translation)

– 200 Mbit/s (≥ 1.1 V to 1.8 V translation)

– 150 Mbit/s (≥ 1.1 V to 1.5 V translation)

– 100 Mbit/s (≥ 1.1 V to 1.2 V translation)

• Suspend mode

• Latch-up performance exceeds 100 mA per JESD 78 Class II

• Inputs accept voltages up to 3.6 V

• IOFF circuitry provides partial Power-down mode operation

• Multiple package options

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