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IDT74FCT245PB Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT74FCT245PB Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 7 page Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES MAY 1992 ©1992 Integrated Device Technology, Inc. 7.9 DSC-4201/3 ® The IDT logo is a registered trademark of Integrated Device Technology, Inc. FAST is a registered trademark of National Semiconductor Co. DIP/SOIC/CERPACK TOP VIEW FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS IDT54/74FCT245/A/C IDT54/74FCT640/A/C IDT54/74FCT645/A/C 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 compatible • CMOS output level compatible •IOL = 64mA (commercial) and 48mA (military) • Input current levels only 5 µA max. • CMOS power levels (2.5mW typical static) • Direction control and over-riding 3-state control • Product available in Radiation Tolerant and Radiation Enhanced versions • Military product compliant to MIL-STD-883, Class B and DESC listed • Meets or exceeds JEDEC Standard 18 specifications DESCRIPTION: 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 communication between data buses. The transmit/receive (T/ R) input deter- mines 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 PIN CONFIGURATIONS 2534 drw 02 A B0 0 T/R OE A B1 1 A B2 2 A B3 3 A B4 4 A B5 5 A B6 6 A B7 7 5 6 7 8 9 10 A1 A2 A3 1 2 3 4 20 19 18 17 16 15 14 13 Vcc 12 11 T/R B1 A4 A5 A6 A7 OE B2 B3 B4 B5 B6 GND B7 A0 B0 P20-1 D20-1 SO20-2 & E20-1 2534 drw 01 INDEX B0 B1 B2 B3 B4 A2 A3 A4 A5 A6 15 14 18 17 16 5 6 7 8 9 10 11 12 1 4 32 20 13 19 L20-2 LCC TOP VIEW NOTES: 1. FCT245, 645 are noninverting options. 2. FCT640 is the inverting option. 1 |
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