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IDT74FCT138

Integrated Device Tech
Part Number IDT74FCT138
Manufacturer Integrated Device Tech
Description FAST CMOS 1-OF-8 DECODER WITH ENABLE
Published Apr 21, 2005
Detailed Description ® FAST CMOS 1-OF-8 DECODER WITH ENABLE DESCRIPTION: IDT54/74FCT138 IDT54/74FCT138A IDT54/74FCT138C Integrated Device ...
Datasheet PDF File IDT74FCT138 PDF File

IDT74FCT138
IDT74FCT138

Overview
® FAST CMOS 1-OF-8 DECODER WITH ENABLE DESCRIPTION: IDT54/74FCT138 IDT54/74FCT138A IDT54/74FCT138C Integrated Device Technology, Inc.
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 temperature 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 (5µA 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.
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 A2 A1 A0 E 1 E 2 E3 PIN CONFIGURATIONS A0 A1 A2 E1 E2 E3 O7 GND 1 2 3 4 5 6 7 8 16 15 P16-1, D16-1, SO16-1 & E16-1 14 13 12 11 10 9 Vcc O0 O1 O2 O3 O4 O5 O6 DIP/SOIC/CERPACK TOP VIEW INDEX O7 O6 O5 O4 O3 O2 O1 O0 2581 drw 02 A2 E1 NC E2 E3 A1 A0 NC Vcc O0 3 4 5 6 7 8 2 1 20 19 18 17 16 15 14 9 10 11 12 13 L20-2 O1 O2 NC O3 O4 2581 drw 01 The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES ©1992 Integr...


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