IDT IDT54FCT139T, IDT54FCT139AT, IDT54FCT139CT, IDT74FCT139T, IDT74FCT139AT User Manual
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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
FEA TURES:
• Std., A, and C grades
• Low input and output leakage
• 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
≤≤
≤1µA (max.)
≤≤
IDT54/74FCT139T/AT/CT
DESCRIPTION:
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.
Ea
O0a O1a O2a O3a
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
A0a A1a
Eb
O0b O1b O2b O3b
A0b A1b
JUNE 2002MILITARY AND INDUSTRIAL TEMPERATURE RANGES
1
© 2002 Integrated Device Technology, Inc. DSC-2566/8
IDT54/74FCT139T/AT/CT
FAST CMOS 1-OF-4 DECODER WITH ENABLE
PIN CONFIGURATION
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
E
A0a
A1a
O0a
O1a
O2a
O
3a
GND
INDEX
a
1
2
3
16
15
14
VCC
Eb
A1a
A0b
O0a
4
13
A1b
NC
5
6
7
8
12
11
10
9
CERDIP/ SOIC/ QSOP
TOP VIEW
O0b
O1b
O2b
O3b
1a
O
O2a
a
a
0
E
A
23
4
5
6
7
8
9
10 11 12 13
a
D
3
N
O
G
LCC
TOP VIEW
C
C
V
b
3
O
b
E
1920
18
17
16
15
14
b
2
0b
A
A1b
NC
O0b
O1b
O
C
N
1
C
N
ABSOLUTE MAXIMUM RATINGS
Symbol Description Max Unit
(2)
VTERM
VTERM
TSTG Storage Temperature –65 to +150 °C
I
OUT DC Output Current –60 to +120 mA
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by =0.5V unless otherwise noted.
2. Inputs and Vcc terminals only.
3. Output and I/O terminals only.
Terminal Voltage with Respect to GND –0.5 to +7 V
(3)
Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
(1)
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol Parameter
CIN Input Capacitance VIN = 0V 6 10 pF
C
OUT Output Capacitance VOUT = 0V 8 12 pF
NOTE:
1. This parameter is measured at characterization but not tested.
(1)
Conditions Typ. Max. Unit
PIN DESCRIPTION
Pin Names Description
A0, A1 Address Inputs
E Enable Inputs (Active LOW)
O
0 - O3 Outputs (Active LOW)
FUNCTION TABLE
Inputs Outputs
E1 A0 A1 O0 O1 O2 O3
HXXHHHH
L LLLHHH
LHLHLHH
LLHHHLH
LHHHHHL
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
(1)
2
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