7.4
1
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Integrated Device Technology, Inc.
FEATURES:
IDT54/74FCT139 equivalent to FAST
TM
speed
IDT54/74FCT139A 35% faster than FAST
IDT54/74FCT139C 45% faster than FAST
Equivalent to FAST output drive over full temperature
and voltage supply extremes
I
OL
= 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
A 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
DESCRIPTION:
The IDT54/74FCT139/A/C are dual 1-of-4 decoders built
using an advanced dual metal CMOS technology. These
devices have two independent decoders, each of which
accept two binary weighted inputs (A
0
-A
1
) and provide four
mutually exclusive active LOW outputs (
O
0
-
O
3
). Each de-
coder has an active LOW enable (
E
). When
E
is HIGH, all
outputs are forced HIGH.
IDT54/74FCT139
IDT54/74FCT139A
IDT54/74FCT139C
FAST CMOS DUAL
1-OF-4 DECODER
WITH ENABLE
FUNCTIONAL BLOCK DIAGRAM
2605 cnv* 01
2605 cnv* 02
E
a
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
E
b
A
0b
A
1b
O
0b
O
1b
O
2b
O
3b
2605 cnv* 03
PIN CONFIGURATIONS
E
b
O
3b
GND
E
a
E
b
O
3b
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P16-1
D16-1
SO16-1
&
E16-1
INDEX
A
1a
A
1b
E
a
NC
V
CC
3
2
20 19
1
4
5
6
7
8
18
17
16
15
14
9 10 11 12 13
L20-2
A
0a
A
1a
O
0a
O
1a
O
2a
O
3a
A
0b
A
1b
O
0b
O
1b
O
2b
O
0a
NC
O
1a
O
2a
A
0b
NC
O
0b
O
1b
A
0a
O
3a
O
2b
GND
NC
DIP/SOIC/CERPACK
TOP VIEW
LCC
TOP VIEW
MILITARY AND COMMERCIAL TEMPERATURE RANGES
MAY 1992
1992 Integrated Device Technology, Inc.
7.4
DSC 4613/3
1
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a trademark of National Semiconductor Co.
7.4
2
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
TRUTH TABLE
(1)
NOTE:
2605 tbl 05
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Rating
Commercial
Military
Unit
V
TERM(2)
Terminal Voltage
with Respect to
GND
0.5 to +7.0
0.5 to +7.0
V
V
TERM(3)
Terminal Voltage
with Respect to
GND
0.5 to V
CC
0.5 to V
CC
V
T
A
Operating
Temperature
0 to +70
55 to +125
C
T
BIAS
Temperature
Under Bias
55 to +125
65 to +135
C
T
STG
Storage
Temperature
55 to +125
65 to +150
C
P
T
Power
Dissipation
0.5
0.5
W
I
OUT
DC Output
Current
120
120
mA
NOTES:
2605 tbl 01
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 con-
ditions for extended periods may affect reliability. No terminal voltage may
exceed V
CC
by +0.5V unless otherwise noted.
2. Input and V
CC
terminals only.
3. Outputs and I/O terminals only.
CAPACITANCE
(T
A
= +25
C, f = 1.0MHz)
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
C
IN
Input
Capacitance
V
IN
= 0V
6
10
pF
C
OUT
Output
Capacitance
V
OUT
= 0V
8
12
pF
NOTE:
2605 tbl 02
1. This parameter is measured at characterization but not tested.
2605 tbl 04
Pin Names
Description
A
0
, A
1
Address Inputs
E
Enable Input (Active LOW)
O
0
-
O
3
Outputs (Active LOW)
Inputs
Outputs
E
E
A
0
A
1
O
O
0
O
O
1
O
O
2
O
O
3
H
X
X
H
H
H
H
L
L
L
L
H
H
H
L
H
L
H
L
H
H
L
L
H
H
H
L
H
L
H
H
H
H
H
L
7.4
3
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: V
LC
= 0.2V; V
HC
= V
CC
0.2V
Commercial: T
A
= 0
C to +70
C, V
CC
= 5.0V
5%; Military: T
A
= 55
C to +125
C, V
CC
= 5.0V
10%
NOTES:
2605 tbl 03
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25
C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. This parameter is guaranteed but not tested.
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
V
IH
Input HIGH Level
Guaranteed Logic HIGH Level
2.0
--
--
V
V
IL
Input LOW Level
Guaranteed Logic LOW Level
--
--
0.8
V
I
I H
Input HIGH Current
V
CC
= Max.
V
I
= V
CC
--
--
5
A
V
I
= 2.7V
--
--
5
(4)
I
I L
Input LOW Current
V
I
= 0.5V
--
--
5
(4)
V
I
= GND
--
--
5
V
IK
Clamp Diode Voltage
V
CC
= Min., I
N
= 18mA
--
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
O
= GND
60
120
--
mA
V
OH
Output HIGH Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OH
= 32
A
V
HC
V
CC
--
V
V
CC
= Min.
I
OH
= 300
A
V
HC
V
CC
--
V
IN
= V
IH
or V
IL
I
OH
= 12mA MIL.
2.4
4.3
--
I
OH
= 15mA COM'L.
2.4
4.3
--
V
OL
Output LOW Voltage
V
CC
= 3V, V
IN
= V
LC
or V
HC
, I
OL
= 300
A
--
GND
V
LC
V
V
CC
= Min.
I
OL
= 300
A
--
GND
V
LC(4)
V
IN
= V
IH
or V
IL
I
OL
= 32mA MIL.
--
0.3
0.5
I
OL
= 48mA COM'L.
--
0.3
0.5
7.4
4
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
V
LC
= 0.2V; V
HC
= V
CC
0.2V
NOTES:
2605 tbl 04
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25
C ambient.
3. Per TTL driven input (V
IN
= 3.4V); all other inputs at V
CC
or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
6. I
C
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
I
CC
D
H
N
T
+ I
CCD
(f
CP
/2 + f
o
N
O
)
I
CC
= Quiescent Current
I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Output Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
o
= Output Frequency
N
O
= Number of Outputs at f
o
All currents are in milliamps and all frequencies are in megahertz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
NOTES:
2605 tbl 07
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
Quiescent Power Supply Current
V
CC
= Max.
V
IN
V
HC
; V
IN
V
LC
--
0.2
1.5
mA
I
CC
Quiescent Power Supply Current
TTL Inputs HIGH
V
CC
= Max.
V
IN
= 3.4V
(3)
--
0.5
2.0
mA
I
CCD
Dynamic Power Supply
Current
(4)
V
CC
= Max.
Outputs Open
One Bit Toggling
50% Duty Cycle
V
IN
V
HC
V
IN
V
LC
--
0.15
0.3
mA/
MHz
I
C
Total Power Supply Current
(6)
V
CC
= Max.
Outputs Open
fo = 10MHz
V
IN
V
HC
V
IN
V
LC
(FCT)
--
1.7
4.5
mA
50% Duty Cycle
One Output Toggling
V
IN
= 3.4V
V
IN
= GND
--
2.0
5.5
V
CC
= Max.
Outputs Open
fo = 10MHz
V
IN
V
HC
V
IN
V
LC
(FCT)
--
3.2
7.5
(5)
50% Duty Cycle
One Output Toggling
on Each Decoder
V
IN
= 3.4V
V
IN
= GND
--
3.7
9.5
(5)
IDT54/74FCT139
IDT54/74FCT139A
IDT54/74FCT139C
Com'l.
Mil.
Com'l.
Mil.
Com'l.
Mil.
Parameter
Description
Condition
(1)
Min.
(2)
Max. Min.
(2)
Max. Min.
(2)
Max. Min.
(2)
Max. Min.
(2)
Max. Min.
(2)
Max.
Unit
t
PLH
t
PHL
Propagation Delay
A
0
or A
1
to
O
n
C
L
= 50pF
R
L
= 500
1.5
9.0
1.5
12.0
1.5
5.9
1.5
7.8
1.5
5.0
1.5
6.2
ns
t
PLH
t
PHL
Propagation Delay
E
to
O
n
1.5
8.0
1.5
9.0
1.5
5.5
1.5
7.2
1.5
4.8
1.5
5.8
ns
7.4
5
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
ENABLE AND DISABLE TIMES
PROPAGATION DELAY
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
Pulse
Generator
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
t
SU
t
H
t
REM
H
t
SU
R
T
D.U.T.
V
CC
V
IN
C
L
V
OUT
50pF
500
500
7.0V
SAME PHASE
INPUT TRANSITION
3V
1.5V
0V
1.5V
V
OH
V
OL
t
PLH
t
PHL
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
CONTROL
INPUT
3V
1.5V
0V
3.5V
0V
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
CLOSED
SWITCH
OPEN
V
OL
V
OH
3V
1.5V
0V
t
PLH
t
PHL
0.3V
0.3V
t
PLZ
t
PZL
t
PZH
t
PHZ
3.5V
0V
1.5V
1.5V
ENABLE
DISABLE
HIGH-LOW-HIGH
PULSE
LOW-HIGH-LOW
PULSE
t
W
1.5V
1.5V
t
NOTES
2605 drw 10
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
2. Pulse Generator for All Pulses: Rate
1.0 MHz; Z
O
50
; t
F
2.5ns;
t
R
2.5ns.
SWITCH POSITION
Test
Switch
Open Drain
Disable Low
Closed
Enable Low
All Other Tests
Open
DEFINITIONS:
2605 tbl 08
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse
Generator.
7.4
6
IDT54/74FCT139/A/C
FAST CMOS DUAL 1-0F-4 DECODER WITH ENABLE
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
XX
Temp. Range
XXXX
Device Type
X
Package
X
Process
Blank
B
P
D
SO
L
E
139
139A
139C
Commercial
MIL-STD-883, Class B
Plastic DIP
CERDIP
Small Outline IC
Leadless Chip Carrier
CERPACK
Dual 1-of-4 Decoder
Fast Dual 1-of-4 Decoder
Super Fast Dual 1-of-4 Decoder
54
74
55
C to +125
C
0
C to +70
C
FCT
IDT
2605 cnv* 09
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