Datasheet Diodes 74LVC2T45RA3-7 — 数据表

74LVC2T45
DUAL BIT DUAL POWER SUPPLY TRANSLATING
TRANSCEIVER WITH 3 STATE OUTPUTS Description Pin Assignments The 74LVC2T45 is a dual-bit, dual-supply transceiver with tri-state
outputs suitable for transmitting two logic bits across different
voltage domains. The direction pin (DIR) and Port A, consisting of
pins 1A and 2A, have logic levels in relation to VCC(A) while port B,
consisting of pins 1B and 2B have logic levels related to VCC(B).
This arrange-ment allows for universal low-voltage translation
between any voltages from 1.2V to 5.5V. When a HIGH logic level
is applied to the direction pin, port A pins become inputs and port B
pins are outputs. Conversely, the roles of the ports are reversed
when the direction pin is asserted LOW. ( Top View ) VCC(A) 1 8 VCC(B) 1A 2 7 1B 2A 3 6 2B GND 4 5 DIR The tri-state (Ioff) feature places all port pins in a high impedance
state when either power supply is at 0V, which prevents and
damages backflow currents and provides power-down electrical
isolation up to 5.5V as not to interfere with any logic activity on
either of the ports. X2-DFN1210-8
X2-DFN1410-8 Features Wide Supply Voltage Range:

VCC(A): from 1.2V to 5.5V

VCC(B): from 1.2V to 5.5V
± 24mA Output Drive at 3.3V
CMOS Low Power Consumption 16µA Maximum ICC …