IDT54/74FCT139T/AT/CT
FAST CMOS 1-OF-4 DECODER WITH ENABLE
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
FAST CMOS
1-OF-4 DECODER
WITH ENABLE
DESCRIPTION:
FEATURES:
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IDT54/74FCT139T/AT/CT
The IDT54/74FCT139T is a dual 1-of-4 decoder built using an advanced
dual metal CMOS technology. These devices have two independent
decoders, each of which accept two binary weighted inputs (A0-A1) and
provide four mutually exclusive active low outputs (O0-O3). Each decoder
has an active low enable (E). When E is high, all outputs are forced high.
Std., 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
Military product compliant to MIL-STD-883, Class B and DESC
listed (dual marked)
Power off disable outputs permit "live insertion"
Available in the following packages:
– Industrial: SOIC, QSOP
– Military: CERDIP, LCC
FUNCTIONAL BLOCK DIAGRAM
Ea
O 0a
A 0a
O 1a
O 2a
Eb
A 1a
O 3a
O 0b
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
A 0b
O 1b
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
O 2b
A 1b
O 3b
JUNE 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-2566/8
IDT54/74FCT139T/AT/CT
FAST CMOS 1-OF-4 DECODER WITH ENABLE
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%; Military: TA = –55°C to +125°C, VCC = 5.0V ±10%
Symbol
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
VIH
Input HIGH Level
Guaranteed Logic HIGH Level
2
—
—
V
VIL
Input LOW Level
Guaranteed Logic LOW Level
—
—
0.8
V
IIH
Input HIGH Current(4)
VCC = Max.
VI = 2.7V
—
—
±1
µA
IIL
Input LOW Current(4)
VCC = Max.
VI = 0.5V
—
—
±1
II
Input HIGH Current(4)
VCC = Max., VI = VCC (Max.)
—
—
±1
µA
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
–0.7
–1.2
V
–60
2.4
–120
3.3
–225
—
mA
2
3
—
—
0.3
0.5
V
—
200
—
mV
—
0.01
1
µA
IOS
VOH
Parameter
Short Circuit Current
Output HIGH Voltage
VOL
Output LOW Voltage
VH
Quiescent Power Supply Current
IOH = –6mA MIL
IOH = –8mA IND
IOH = –12mA MIL
IOH = –15mA IND
IOL = 32mA MIL
IOL = 48mA IND
Input Hysteresis
ICC
VCC = Max., VO =
VCC = Min
VIN = VIH or VIL
GND(3)
VCC = Min
VIN = VIH or VIL
—
VCC = Max.
VIN = GND or VCC
V
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. The test limit for this parameter is ±5µA at TA = –55°C.
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