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IDT54FCT138CD Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT54FCT138CD Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 6 page Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES MAY 1992 ©1992 Integrated Device Technology, Inc. 7.3 DSC-4625/3 ® The IDT logo is a registered trademark of Integrated Device Technology, Inc. FAST is a trademark of National Semiconductor Co. FEATURES: • IDT54/74FCT138 equivalent to FAST ™ speed • IDT54/74FCT138A 35% faster than FAST • IDT54/74FCT138C 40% faster than FAST • Equivalent to FAST speeds output drive over full tem- perature and voltage supply extremes •IOL = 48mA (commercial) and 32mA (military) • CMOS power levels (1mW typ. static) • TTL input and output level compatible • CMOS output level compatible • Substantially lower input current levels than FAST (5 µA max.) • JEDEC standard pinout for DIP and LCC • Product available in Radiation Tolerant and Radiation Enhanced versions • Military product compliant to MIL-STD-883, Class B • Standard Military Drawing # 5962-87654 is listed on this function. Refer to section 2. DESCRIPTION: The IDT54/74FCT138/A/C are 1-of-8 decoders built using an advanced dual metal CMOS technology. The IDT54/ 74FCT138/A/C accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active LOW outputs ( O0 - O7). The IDT54/74FCT138/A/C feature three enable inputs, two active LOW ( E1, E2) and one active HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion of the device to a 1-of-32 (5 lines to 32 lines) decoder with just four IDT54/74FCT138/A/C devices and one inverter. FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATIONS DIP/SOIC/CERPACK TOP VIEW 4 5 6 7 8 L20-2 18 17 16 15 14 INDEX 2581 drw 01 E3 NC NC A2 E1 E2 O1 O2 O3 O4 9 10 11 12 13 32 1 20 19 LCC TOP VIEW IDT54/74FCT138 IDT54/74FCT138A IDT54/74FCT138C FAST CMOS 1-OF-8 DECODER WITH ENABLE 2581 drw 02 O0 O1 O2 O3 O4 O5 O6 O7 E1 E2 E3 A0 A1 A2 5 6 7 8 A0 A1 1 2 3 4 16 15 14 13 12 11 10 9 Vcc P16-1, D16-1, SO16-1 & E16-1 A2 E1 E2 GND O0 O1 O2 O3 O4 O O6 O7 5 E3 1 |
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