1. General description

The 74AVC1T45 is a single bit, dual supply transceiver with 3-state output that enables

bidirectional level translation. It features two 1-bit input-output ports (A and B), a direction control

input (DIR) 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 A and DIR are referenced to VCC(A)

and pin B is referenced to VCC(B). A HIGH on DIR allows transmission from A to B and a LOW on

DIR allows transmission from B to A.

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 A and B 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

• High noise immunity

• CMOS low power dissipation

• Complies with JEDEC standards:

• JESD8-12 (0.8 V to 1.3 V)

• JESD8-11( 0.9 V to 1.65 V)

• JESD8-7 (1.65 V to 1.95 V)

• JESD8-5 (2.3 V to 2.7 V)

• JESD8C (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:

• 500 Mbit/s (1.8 V to 3.3 V translation)

• 320 Mbit/s (< 1.8 V to 3.3 V translation)

• 320 Mbit/s (translate to 2.5 V or 1.8 V)

• 280 Mbit/s (translate to 1.5 V)

• 240 Mbit/s (translate to 1.2 V)

• Suspend mode

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

• Overvoltage tolerant inputs to 3.6 V

• Dynamically controlled outputs

• Low noise overshoot and undershoot < 10 of VCC

• IOFF circuitry provides partial Power-down mode operation

• Multiple package options

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

74AVC1T45属于集成电路（IC） > 转换器，电平移位器。安世半导体(中国)有限公司制造生产的74AVC1T45转换器，电平移位器逻辑转换器或电平移位器 IC 可用于在数字逻辑设备之间传递信息，这些设备可在不同/不兼容的供电电压下工作，或可实现不同的信令方式。例如，可以将需要 5 V 电源的数字输出传感器连接到具有 3.3 V I/O 电源的 FPGA，或者在 CMOS 或 TTL 等单端信令方式与 PECL 或 LVDS 等差分技术之间进行转换。