IDT74FCT645 Datasheet | Integrated Device Technology

DESCRIPTION : IDT54/74FCT245/A/C IDT54/74FCT640/A/C IDT54/74FCT645/A/C Integrated Device Technology, Inc. FEATURES : - IDT54/74FCT245/640/645 equivalent to FAST™ speed and drive - IDT54/74FCT245A/640A/645A 25% faster than FAST - IDT54/74FCT245C/640C/645C 40% faster than FAST - TTL input and output level patible - CMOS output level patible - IOL = 64m A (mercial) and 48m A (military) - Input current levels only 5µA max. - CMOS power levels (2.5m W typical static) - Direction control and over-riding 3-state control - Product available in Radiation Tolerant and Radiation Enhanced versions - Military product pliant to MIL-STD-883, Class B and DESC listed - Meets or exceeds JEDEC Standard 18 specifications The IDT octal bidirectional transceivers are built using an advanced dual metal CMOS technology. The IDT54/ 74FCT245/A/C, IDT54/74FCT640/A/C and IDT54/74FCT645/ A/C are designed for asynchronous two-way munication between data buses. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A ports to B ports, and receive (active LOW) from B ports to A ports. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in High-Z condition. The IDT54/74FCT245/A/C and IDT54/74FCT645/A/C transceivers have non-inverting outputs. The IDT54/ 74FCT640/A/C has inverting outputs. FUNCTIONAL BLOCK DIAGRAM T/R OE A0 B0 A1 B1 A2 B2 A3 B3 PIN CONFIGURATIONS T/R A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 P20-1 D20-1 SO20-2 & E20-1 17 16 15 14 13 12 11 Vcc OE B0 B1 B2 B3 B4 B5 B6 B7 DIP/SOIC/CERPACK TOP VIEW INDEX B4 A5 B5 A6 B6 A7 B7 NOTES: 1. FCT245, 645 are noninverting options. 2. FCT640 is the inverting option. 2534 drw 02 A2 A3 A4 A5 A6 A1 A0 T/R Vcc OE 3 2 4 5 6 7 8 1 20 19 18 17 16 15 14 9 10 11 12 13 A4 L20-2 B0 B1 B2 B3 B4 The IDT logo is a registered trademark of Integrated Device Technology, Inc. FAST is a registered trademark...