IDT54/74FCT16244T/AT/CT
FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
FAST CMOS 16-BIT
BUFFER/LINE DRIVER
IDT54/74FCT16244T/AT/CT
FEATURES:
•
•
•
•
•
•
•
•
•
0.5 MICRON CMOS Technology
High-speed, low-power CMOS replacement for ABT functions
Typical t
SK(o)
(Output Skew) < 250ps
Low input and output leakage
≤
1µA (max.)
ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
High drive outputs (–32mA I
OH
, 64mA I
OL
)
Power off disable outputs permit “live insertion”
Typical V
OLP
(Output Ground Bounce) < 1.0V at V
CC
= 5V,
T
A
= 25°C
Available in the following packages:
– Industrial: SSOP, TSSOP
– Military: CERPACK
DESCRIPTION:
The FCT16244T 16-Bit Buffer/Line Driver is for bus interface or signal
buffering applications requiring high speed and low power dissipation. These
devices have a flow through pin organization, and shrink packaging to simplify
board layout. All inputs are designed with hysteresis for improved noise margin.
The three-state controls allow independent 4-bit, 8-bit or combined 16-bit
operation. These parts are plug in replacements for 54/74ABT16244 where
higher speed, lower noise or lower power dissipation levels are desired.
The FCT16244T is ideally suited for driving high capacitance loads
(>200pF) and low impedance backplanes. These "high drive" buffers are
designed with power off disable capability to allow "live insertion" of boards when
used in a backplane interface.
FUNCTIONAL BLOCK DIAGRAM
1
OE
1
A
1
1
A
2
1
A
3
1
A
4
1
Y
1
1
Y
2
1
Y
3
1
Y
4
3
OE
3
A
1
3
A
2
3
A
3
3
A
4
3
Y
1
3
Y
2
3
Y
3
3
Y
4
2
OE
2
A
1
2
A
2
2
A
3
2
A
4
2
Y
1
2
Y
2
2
Y
3
2
Y
4
4
OE
4
A
1
4
A
2
4
A
3
4
A
4
4
Y
1
4
Y
2
4
Y
3
4
Y
4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
1
© 2006 Integrated Device Technology, Inc.
OCTOBER 2008
DSC-5460/5
IDT54/74FCT16244T/AT/CT
FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
(2)
Description
Terminal Voltage with Respect to GND
Terminal Voltage with Respect to GND
Storage Temperature
DC Output Current
Max
–0.5 to +7
–0.5 to V
CC
+0.5
–65 to +150
–60 to +120
Unit
V
V
°C
mA
V
TERM
(3)
T
STG
I
OUT
1
OE
1
Y
1
1
Y
2
2
OE
1
A
1
1
A
2
GND
1
Y
3
1
Y
4
GND
1
A
3
1
A
4
V
CC
2
Y
1
2
Y
2
V
CC
2
A
1
2
A
2
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.
2. All device terminals except FCT162XXXT Output and I/O terminals.
3. Output and I/O terminals terminals for FCT162XXXT and FCT166XXXT.
CAPACITANCE
(T
A
= +25°C, F = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
3.5
3.5
Max.
6
8
Unit
pF
pF
GND
2
Y
3
2
Y
4
3
Y
1
3
Y
2
GND
2
A
3
2
A
4
3
A
1
3
A
2
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names
xOE
xAx
xYx
Data Inputs
3-State Outputs
Description
3-State Output Enable Inputs (Active LOW)
GND
3
Y
3
3
Y
4
GND
3
A
3
3
A
4
V
CC
4
Y
1
4
Y
2
V
CC
4
A
1
4
A
2
FUNCTION TABLE
(1)
Inputs
xOE
L
L
H
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High-Impedance
Outputs
xAx
L
H
X
xYx
L
H
Z
GND
4
Y
3
4
Y
4
4
OE
GND
4
A
3
4
A
4
3
OE
SSOP/ TSSOP/ CERPACK
TOP VIEW
2
IDT54/74FCT16244T/AT/CT
FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 5.0V ±10%; Military: T
A
= –55°C to +125°C, V
CC
= 5.0V ±10%
Symbol
V
IH
V
IL
I
IH
Parameter
Input HIGH Level
Input LOW Level
Input HIGH Current (Input pins)
(5)
Input HIGH Current (I/O pins)
(5)
I
IL
Input LOW Current (Input pins)
(5)
Input LOW Current (I/O pins)
(5)
I
OZH
I
OZL
V
IK
I
OS
V
H
I
CCL
I
CCH
I
CCZ
High Impedance Output Current
(3-State Output pins)
(5)
Clamp Diode Voltage
Short Circuit Current
Input Hysteresis
Quiescent Power Supply Current
V
CC
= Max.
V
IN
= GND or V
CC
V
CC
= Min., I
IN
= –18mA
V
CC
= Max., V
O
= GND
(3)
—
V
CC
= Max.
V
O
= 2.7V
V
O
= 0.5V
V
I
= GND
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max.
V
I
= V
CC
Min.
2
—
—
—
—
—
—
—
—
–80
—
—
Typ.
(2)
—
—
—
—
—
—
—
—
–0.7
–140
100
5
Max.
—
0.8
±1
±1
±1
±1
±1
±1
–1.2
–250
—
500
V
mA
mV
µA
µA
Unit
V
V
µA
OUTPUT DRIVE CHARACTERISTICS
Symbol
I
O
V
OH
Parameter
Output Drive Current
Output HIGH Voltage
Test Conditions
(1)
V
CC
= Max., V
O
= 2.5V
(3)
V
CC
= Min.
I
OH
= –3mA,
V
IN
= V
IH
or V
IL
I
OH
= –12mA MIL
I
OH
= –15mA IND
I
OH
= –24mA MIL
I
OH
= –32mA IND
(4)
V
CC
= Min.
I
OL
= 48mA MIL
V
IN
= V
IH
or V
IL
I
OL
= 64mA IND
V
CC
= 0V
,
V
IN
or V
O
≤
4.5V
Min.
–50
2.5
2.4
2
—
—
Typ.
(2)
—
3.5
3.5
3
0.2
—
Max.
–180
—
—
—
0.55
±1
Unit
mA
V
V
V
V
μA
V
OL
I
OFF
Output LOW Voltage
Input/Output Power Off Leakage
(5)
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 V
CC
= 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Duration of the condition can not exceed one second.
5. The test limit for this parameter is ±5µA at T
A
= –55°C.
3
IDT54/74FCT16244T/AT/CT
FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
ΔI
CC
I
CCD
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
(4)
V
CC
= Max.
V
IN
= 3.4V
(3)
V
CC
= Max.
Outputs Open
xOE = GND
One Input Togging
50% Duty Cycle
V
CC
= Max.
Outputs Open
f
i
= 10MHz
50% Duty Cycle
xOE = GND
One Bit Toggling
V
CC
= Max.
Outputs Open
f
i
= 2.5MHz
50% Duty Cycle
xOE = GND
Sixteen BitsTogging
V
IN
= V
CC
V
IN
= GND
Test Conditions
(1)
Min.
—
—
Typ.
(2)
0.5
60
Max.
1.5
100
Unit
mA
µA/
MHz
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
V
IN
= GND
V
IN
= 3.4V
V
IN
= GND
V
IN
= V
CC
V
IN
= GND
—
0.6
1.5
mA
—
0.9
2.3
—
2.4
4.5
(5)
V
IN
= 3.4V
V
IN
= GND
—
6.4
16.5
(5)
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 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
+
ΔI
CC
D
H
N
T
+ I
CCD
(f
CP
N
CP
/2 + fiNi)
I
CC
= Quiescent Current (I
CCL
, I
CCH
and I
CCZ
)
ΔI
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)
N
CP
= Number of Clock Inputs at f
CP
fi = Input Frequency
Ni = Number of Inputs at fi
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SK(o)
Parameter
Propagation Delay
xAx to xYx
Output Enable Time
Output Disable Time
Output Skew
(3)
Condition
(1)
C
L
= 50pF
R
L
= 500Ω
54FCT16244T
Mil.
(2)
Min.
Max.
1.5
7
1.5
1.5
—
8.5
7.5
0.5
54/74FCT16244AT
Ind.
Mil.
(2)
(2)
Min.
Max. Min.
Max.
1.5
4.8
1.5
5.1
1.5
1.5
—
6.2
5.6
0.5
1.5
1.5
—
6.5
5.9
0.5
54/74FCT16224CT
Ind.
Mil.
(2)
(2)
Min.
Max.
Min.
Max.
1.5
3.4
1.5
4.6
1.5
1.5
—
4.4
3.9
0.5
1.5
1.5
—
6.5
5.7
0.5
Unit
ns
ns
ns
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
4
IDT54/74FCT16244T/AT/CT
FAST CMOS 16-BIT BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
V
CC
500Ω
V
IN
Pulse
Generator
R
T
D.U.T.
50pF
C
L
500Ω
V
OUT
7.0V
SWITCH POSITION
Test
Open Drain
Disable Low
Enable Low
All Other Tests
Switch
Closed
Open
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator.
Test Circuits for All Outputs
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
PRESET
CLEAR
CLOCK ENABLE
ETC.
t
SU
t
H
LOW-HIGH-LOW
PULSE
t
W
HIGH-LOW-HIGH
PULSE
1.5V
t
REM
1.5V
t
SU
t
H
Pulse Width
Set-up, Hold, and Release Times
ENABLE
SAME PHASE
INPUT TRANSITION
t
PLH
OUTPUT
t
PLH
OPPOSITE PHASE
INPUT TRANSITION
t
PHL
t
PHL
3V
1.5V
0V
V
OH
1.5V
V
OL
3V
1.5V
0V
CONTROL
INPUT
t
PZL
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
CLOSED
t
PZH
SWITCH
OPEN
1.5V
0V
0V
3.5V
1.5V
t
PHZ
0.3V
V
OH
t
PLZ
DISABLE
3V
1.5V
0V
3.5V
0.3V
V
OL
Propagation Delay
Enable and Disable Times
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.
5
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