Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SEPTEMBER 1996
1997 Integrated Device Technology, Inc.
6.5
DSC-2635/5
IDT54/74FCT151T/AT/CT
FAST CMOS
8-INPUT MULTIPLEXER
DESCRIPTION:
The IDT54/74FCT151T/AT/CT are high-speed 8-input mul-
tiplexers built using an advanced dual metal CMOS technol-
ogy. They select one bit of data from up to eight sources under
the control of three select inputs. Both assertion and negation
outputs are provided.
The IDT54/74FCT151T/AT/CT has a common Active-LOW
enable (
E
) input. When
E
is LOW, data from one of eight inputs
is routed to the complementary outputs according to the 3-bit
code applied to the Select (S
0
-S
2
) inputs. A common appli-
cation of the `FCT151 is data routing from one of eight
sources.
1
FEATURES:
Std., A, and C speed grades
Low input and output leakage
1
A (max.)
Extended commercial range of 40
C to +85
C
CMOS power levels
True TTL input and output compatibility
V
OH
= 3.3V (typ.)
V
OL
= 0.3V (typ.)
High drive outputs (-15mA I
OH
, 48mA I
OL
)
Power off disable outputs permit "live insertion"
Meets or exceeds JEDEC standard 18 specifications
Product available in Radiation Tolerant and Radiation
Enhanced versions
Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
Available in DIP, SOIC, CERPACK and LCC packages
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
I
7
Z
Z
S
2
S
1
S
0
E
I
6
I
5
I
4
I
3
I
2
I
1
I
0
2635 drw 01
FUNCTIONAL BLOCK DIAGRAM
6.5
2
IDT54/74FCT151T/AT/CT
FAST CMOS 8-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
ABSOLUTE MAXIMUM RATINGS
(1)
PIN DESCRIPTION
2635 tbl 03
FUNCTION TABLE
(1)
NOTE:
2635 tbl 04
1. H = HIGH Voltage Level, L = LOW Voltage Level, X = Don't care, Z =
High Impedance.
2635 drw 02
I
4
I
2
I
1
I
0
Z
Z
E
GND
I
5
I
6
I
7
S
0
S
2
S
1
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DIP/SOIC/CERPACK
TOP VIEW
P16-1
D16-1
SO16-1
&
E16-1
I
3
INDEX
I
1
I
0
NC
Z
I
5
I
6
NC
I
7
S
0
I
3
I
2
NC
V
CC
I
4
E
GND
NC
S
2
S
1
LCC
TOP VIEW
3
2
20 19
1
4
5
6
7
8
18
17
16
15
14
9 10 11 12 13
L20-2
z
2635 drw 03
Pin Names
Description
I
0
- I
7
Data Inputs
S
0
- S
2
Selects Inputs
E
Enable Input (Active LOW)
Z
Data Output
Z
Inverted Data Output
Inputs
Outputs
S
2
S
1
S
0
E
Z
Z
X
L
L
L
L
H
H
H
H
X
L
L
H
H
L
L
H
H
X
L
H
L
H
L
H
L
H
H
L
L
L
L
L
L
L
L
L
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
H
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
Symbol
Description
Max.
Unit
V
TERM(2)
Terminal Voltage with Respect to
GND
0.5 to +7.0
V
V
TERM(3)
Terminal Voltage with Respect to
GND
0.5 to
V
CC
+0.5
V
T
STG
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 RAT-
INGS 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
V
CC
by +0.5V unless otherwise noted.
2. Input and V
CC
terminals only.
3. Outputs and I/O terminals only.
2635 lnk 01
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:
1. This parameter is measured at characterization but not tested.
2635 lnk 02
IDT54/74FCT151T/AT/CT
FAST CMOS 8-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.5
3
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: T
A
= 40
C to +85
C, V
CC
= 5.0V
5%; Military: T
A
= 55
C to +125
C, V
CC
= 5.0V
10%
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
(4)
V
CC
= Max.
V
I
= 2.7V
--
--
1
A
I
I L
Input LOW Current
(4)
V
CC
= Max.
V
I
= 0.5V
--
--
1
A
I
OZH
High Impedance Output Current
(4)
V
CC
= Max.
V
O
= 2.7V
--
--
1
A
I
OZL
V
O
= 0.5V
--
--
1
I
I
Input HIGH Current
(4)
V
CC
= Max., V
I
= V
CC
(Max.)
--
--
20
A
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
225
mA
V
OH
Output HIGH Voltage
V
CC
= Min.
I
OH
= 6mA MIL.
2.4
3.3
--
V
V
IN
=
V
IH
or
V
IL
I
OH
= 8mA COM'L.
I
OH
= 12mA MIL.
2.0
3.0
--
V
I
OH
= 15mA COM'L.
V
OL
Output LOW Voltage
V
CC
= Min.
I
OL
= 32mA MIL.
--
0.3
0.5
V
V
IN
= V
IH
or V
IL
I
OL
= 48mA COM'L.
V
H
Input Hysteresis
--
--
200
--
mV
I
CC
Quiescent Power Supply Current
V
CC
= Max.
V
IN
= GND or V
CC
--
0.01
1
mA
NOTES:
2635 tbl 05
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. The test limit for this parameter is
5
A at T
A
= -55
C.
6.5
4
IDT54/74FCT151T/AT/CT
FAST CMOS 8-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
NOTES:
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
i
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 Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
i
= Input Frequency
N
O
= Number of Inputs at f
i
All currents are in milliamps and all frequencies are in megahertz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
NOTES:
2635 tbl 07
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
2635 tbl 06
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
QuiescentPower 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
E
or
OE
= GND
One Bit Toggling
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
--
0.15
0.25
mA/
MHz
I
C
Total Power Supply Current
(5)
V
CC
= Max.
Outputs Open
fi = 10MHz
V
IN
= V
CC
V
IN
= GND
--
3.2
6.5
mA
50% Duty Cycle
E
or
OE
= GND
One Input Toggling
V
IN
= 3.4V
V
IN
= GND
--
3.5
7.5
IDT54/74FCT151T
IDT54/74FCT151AT
IDT54/74FCT151CT
Com'l.
Mil.
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
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
P
ropagation Delay
S
N
to
Z
C
L
= 50pF
R
L
= 500
1.5
9.0
1.5
10.0
1.5
6.6
1.5
7.4
1.5
5.6
1.5
6.2
ns
t
PLH
t
PHL
P
ropagation Delay
S
N
to Z
1.5
10.5
1.5
11.5
1.5
6.8
1.5
7.6
1.5
5.8
1.5
6.5
ns
t
PLH
t
PHL
P
ropagation Delay
E
to
Z
1.5
7.0
1.5
7.5
1.5
5.6
1.5
6.3
1.5
4.8
1.5
5.4
ns
t
PLH
t
PHL
P
ropagation Delay
E
to Z
1.5
9.5
1.5
11.0
1.5
5.8
1.5
6.6
1.5
5.0
1.5
5.7
ns
t
PLH
t
PHL
P
ropagation Delay
I
N
to
Z
1.5
6.5
1.5
7.5
1.5
5.2
1.5
5.8
1.5
4.4
1.5
4.9
ns
t
PLH
t
PHL
P
ropagation Delay
I
N
to Z
1.5
7.5
1.5
9.0
1.5
5.5
1.5
6.1
1.5
4.7
1.5
5.2
ns
IDT54/74FCT151T/AT/CT
FAST CMOS 8-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.5
5
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
ENABLE AND DISABLE TIMES
PROPAGATION DELAY
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
SWITCH POSITION
Pulse
Generator
R
T
D.U.T.
V
CC
V
IN
C
L
V
OUT
50pF
500
500
7.0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
t
SU
t
H
t
REM
t
SU
t
H
HIGH-LOW-HIGH
PULSE
LOW-HIGH-LOW
PULSE
t
W
1.5V
1.5V
SAME PHASE
INPUT TRANSITION
3V
1.5V
0V
1.5V
V
OH
t
PLH
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
3V
1.5V
0V
t
PLH
t
PHL
t
PHL
V
OL
CONTROL
INPUT
3V
1.5V
0V
3.5V
0V
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
CLOSED
SWITCH
OPEN
V
OL
0.3V
0.3V
t
PLZ
t
PZL
t
PZH
t
PHZ
3.5V
0V
1.5V
1.5V
ENABLE
DISABLE
V
OH
PRESET
CLEAR
CLOCK ENABLE
ETC.
Test
Switch
Disable Low
Enable Low
Closed
All Other Tests
Open
Open Drain
DEFINITIONS:
C
L
=
Load capacitance: includes jig and probe capacitance.
R
T
=
Termination resistance: should be equal to Z
OUT
of the Pulse
Generator.
2635 drw 04
2635 drw 05
2635 drw 06
2635 drw 07
2635 drw 08
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-
HIGH
2. Pulse Generator for All Pulses: Rate
1.0MHz; t
F
2.5ns; t
R
2.5ns
2635 lnk 08
6.5
6
IDT54/74FCT151T/AT/CT
FAST CMOS 8-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT XX FCT
XXXX
Device Type
X
Package
X
Process
Blank
B
P
D
SO
L
E
151T
151AT
151CT
Commercial
MIL-STD-883, Class B
Plastic DIP
CERDIP
Small Outline IC
Leadless Chip Carrier
CERPACK
8-Input Multiplexer
54
74
55
C to +125
C
40
C to +85
C
Temp. Range
2635 drw 09
Blank
High Drive
X
Family
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