Features: • 0.8 m CMOS technology• 3.3 V bus to 5 V bus interface• Bidirectional data transfer• Control inputs can be driven from either 3.3 V or 5 V devices.• Inter-rail output amplitude for both 3.3 V and 5 V ports• ESD tolerance > 2000 V; MIL-STD-883 (when...
LC74FCT164245T: Features: • 0.8 m CMOS technology• 3.3 V bus to 5 V bus interface• Bidirectional data transfer• Control inputs can be driven from either 3.3 V or 5 V devices.• Inter-ra...
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Parameter | Symbol | Conditions |
Ratings |
Unit | |
Pin voltage referenced to GND | VTERM *2 |
0.5 to +7.0 |
V | ||
Pin voltage referenced to GND | VTERM *3 |
0.5 to( VCC2) +0.5 |
V | ||
Operating temperature | Topr |
40 to +85 |
|||
Temperature when bias is applied | TBIAS |
55 to +125 |
|||
Storage temperature | Tstg |
55 to +125 |
|||
Power dissipation | PT |
*4 |
W | ||
DC output current | IOUT |
60 to +60 |
mA |
The LC74FCT164245 and LC74FCT164245T 16-bit 3.3- to-5 V translators are fabricated in an advanced twometal- layer CMOS technology. These high-speed lowpower transceivers are designed to be used as interfaces between 3.3 V and 5 V busses in 3.3/5 V dual power supply systems. The use of these products allows system designers to interface TTL-compatible 3.3 V components to 5 V components. The directionality and output enable control in these products is designed to allow them to be used as either two independent 8-bit transceivers or as a single 16-bit transceiver. In use, the A port is interfaced to the 3.3 V bus and the B port to the 5 V bus. The direction control pin ( *DIR) controls the data flow direction and the output enable pin ( *OE) disables directionality control and disables both ports. These control signals can be driven from either 3.3 V system or 5 V system devices. The LC74FCT164245T is optimal for driving largecapacitance loads and low-impedance loads. These output buffers can also be used as an interface between a dualpower- supply system and external 5 V system equipment. The LC74FCT164245 provides a balanced output drive function that incorporates 25 (typical value) supply terminating resistors in each output to minimize ground bounce. The LC74FCT164245 features an inter-rail output amplitude and a control-type output edge rate. These features aim at improved signal quality. The LC74FCT164245 is optimal for use in on-board bus interfaces, and in particular, memory data buses.