74LVX3245MTR集成電路（IC）的轉(zhuǎn)換器電平移位器規(guī)格書PDF中文資料

74LVX3245MTR屬于集成電路（IC）的轉(zhuǎn)換器電平移位器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的74LVX3245MTR轉(zhuǎn)換器，電平移位器邏輯轉(zhuǎn)換器或電平移位器 IC 可用于在數(shù)字邏輯設(shè)備之間傳遞信息，這些設(shè)備可在不同/不兼容的供電電壓下工作，或可實(shí)現(xiàn)不同的信令方式。例如，可以將需要 5 V 電源的數(shù)字輸出傳感器連接到具有 3.3 V I/O 電源的 FPGA，或者在 CMOS 或 TTL 等單端信令方式與 PECL 或 LVDS 等差分技術(shù)之間進(jìn)行轉(zhuǎn)換。

DESCRIPTION

The 74LVX3245 is a dual supply low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Designed for use as an interface between a 5V bus and a 3.3V bus in a mixed 5V/3.3V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation.

This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated.

The A-port interfaces with the 3V bus, the B-port with the 5V bus.

All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.

■ HIGH SPEED:

tPD = 8ns (MAX.) at TA=25°C

VCCA = 3.3V, VCCB = 5.0V

■ LOW POWER DISSIPATION:

ICCA = ICCB = 5μA(MAX.) at TA=25°C

■ LOW NOISE: VOLP =0.3V (TYP.) at VCC =3.3V

■ SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN)

■ BALANCED PROPAGATION DELAYS: tPLH ? tPHL

■ OPERATING VOLTAGE RANGE:

VCCA(OPR) = 2.7V to 3.6V (1.2V Data Retention)

VCCB(OPR) = 4.5V to 5.5V (1.2V Data Retention)

PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 3245

■ IMPROVED LATCH-UP IMMUNITY