IDT74FCT138AT/CT
FAST CMOS 1-OF-8 DECODER WITH ENABLE
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS
1-OF-8 DECODER
WITH ENABLE
IDT74FCT138AT/CT
FEATURES:
DESCRIPTION:
•
•
•
•
The IDT74FCT138T is a 1-of-8 decoder built using an advanced dual
metal CMOS technology. The IDT54/74FCT138T accepts three binary
weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually
exclusive active low outputs (O0 - O7). The IDT54/74FCT138T features
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 IDT54/74FCT138T devices and
one inverter.
•
•
•
•
A and C grades
Low input and output leakage ≤1µA (max.)
CMOS power levels
True TTL input and output compatibility:
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
High Drive outputs (-15mA IOH, 48mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Power off disable outputs permit "live insertion"
Available in SOIC and QSOP packages
FUNCTIONAL BLOCK DIAGRAM
A1
A2
O7
E1
A0
O6
O5
O3
O4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
E2
E3
O2
O1
O0
FEBRUARY 2006
1
© 2006 Integrated Device Technology, Inc.
DSC-2570/11
