3.3V CMOS 16-BIT
BUFFER/LINE DRIVER
Integrated Device Technology, Inc.
IDT74FCT163244/A/C
FEATURES:
• 0.5 MICRON CMOS Technology
•
Typical t
SK
(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
• Packages include 25 mil pitch SSOP, 19.6 mil pitch
TSSOP and 15.7 mil pitch TVSOP
• Extended commercial range of -40°C to +85°C
• V
CC
= 3.3V
±0.3V,
Normal Range or
V
CC
= 2.7 to 3.6V, Extended Range
• CMOS power levels (0.4µW typ. static)
• Rail-to-Rail output swing for increased noise margin
• Low Ground Bounce (0.3V typ.)
• Inputs (except I/O) can be driven by 3.3V or 5V
components
DESCRIPTION:
The FCT163244/A/C 16-bit buffer/line drivers are built
using advanced dual metal CMOS technology. These high-
speed, low-power devices offer bus/backplane interface ca-
pability with improved packing density. These devices have
a flow-through organization for simplifying board layout. The
three-state controls operate these devices in a Quad-Nibble,
Dual-Byte or single 16-bit word mode. All inputs are designed
with hysteresis for improved noise margin.
The inputs of the FCT163244/A/C can be driven from either
3.3V or 5V devices. This feature allows the use of these
devices as translators in a mixed 3.3V/5V supply system.
Thus, the FCT163244/A/C can be used as buffers to connect
5V components to a 3.3V bus.
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
Y
1
3
Y
2
3
A
3
3
A
4
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
2532 drw 01
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
2532 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGES
©1996
Integrated Device Technology, Inc.
AUGUST 1996
8.1
DSC-2532/7
1
IDT74FCT163244/A/C
3.3V 16-BIT BUFFER/LINE DRIVER
COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
1
OE
1
Y
1
1
Y
2
PIN DESCRIPTION
Pin Names
x
OE
xAx
xYx
Description
3–State Output Enable Inputs (Active LOW)
Data Inputs
3-State Outputs
2532 tbl 01
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
SO48-1 37
SO48-2
SO48-3 36
35
34
33
32
31
30
29
28
27
26
25
2
OE
1
A
1
1
A
2
GND
1
Y
3
1
Y
4
GND
1
A
3
1
A
4
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM(2)
V
TERM(3)
V
TERM(4)
T
STG
I
OUT
Description
Terminal Voltage with
Respect to GND
Terminal Voltage with
Respect to GND
Terminal Voltage with
Respect to GND
Storage Temperature
DC Output Current
Max.
–0.5 to +4.6
–0.5 to +7.0
–0.5 to
V
CC
+ 0.5
–65 to +150
–60 to +60
Unit
V
V
V
°C
mA
V
CC
2
Y
1
2
Y
2
V
CC
2
A
1
2
A
2
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
GND
3
Y
3
3
Y
4
GND
3
A
3
3
A
4
2532 lnk 03
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 ex-
tended periods may affect reliability.
2. Vcc terminals.
3. Input terminals.
4. Output and I/O terminals.
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
Parameter
(1)
C
IN
Input
Capacitance
C
OUT
Output
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
3.5
3.5
Max. Unit
6.0
pF
8.0
pF
V
CC
4
Y
1
4
Y
2
V
CC
4
A
1
4
A
2
GND
4
Y
3
4
Y
4
4
OE
GND
4
A
3
4
A
4
3
OE
2532 drw 03
2532 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
FUNCTION TABLE
(1)
Inputs
x
OE
L
L
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
SSOP/
TSSOP/TVSOP
TOP VIEW
xAx
L
H
X
Outputs
xYx
L
H
Z
2532 tbl 02
8.1
2
IDT74FCT163244/A/C
3.3V 16-BIT BUFFER/LINE DRIVER
COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: T
A
= –40°C to +85°C, V
CC
= 2.7V to 3.6V
Symbol
V
IH
V
IL
I
I H
I
I L
I
OZH
I
OZL
V
IK
I
ODH
I
ODL
V
OH
Parameter
Input HIGH Level (Input pins)
Input HIGH Level (I/O pins)
Input LOW Level
(Input and I/O pins)
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
V
CC
= Max.
V
CC
= Max.
V
I
= 5.5V
V
I
= V
CC
V
I
= GND
V
I
= GND
V
O
= V
CC
V
O
= GND
V
CC
= Min., I
IN
= –18mA
V
CC
= 3.3V, V
IN
= V
IH
or V
IL,
V
O
= 1.5V
(3)
V
CC
= 3.3V, V
IN
= V
IH
or V
IL,
V
O
= 1.5V
(3)
V
CC
= Min.
V
IN
= V
IH
or V
IL
V
CC
= 3.0V
V
IN
= V
IH
or V
IL
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OH
= –0.1mA
I
OH
= –3mA
I
OH
= –8mA
I
OL
= 0.1mA
I
OL
= 16mA
I
OL
= 24mA
V
CC
= 3.0V
I
OL
= 24mA
V
IN
= V
IH
or V
IL
V
CC
= Max., V
O
= GND
(3)
—
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Min.
2.0
2.0
–0.5
—
—
—
—
—
—
—
–36
50
V
CC
–
0.2
2.4
2.4
(5)
—
—
—
—
–60
—
—
Typ.
(2)
—
—
—
Max.
5.5
V
CC
+0.5
0.8
Unit
V
V
—
—
—
—
—
—
–
0.7
±
1
±
1
±
1
±
1
±
1
±
1
–
1.2
µ
A
µ
A
V
mA
mA
V
–60
90
—
3.0
3.0
—
0.2
0.3
0.3
–
135
–110
200
—
—
—
0.2
0.4
0.55
0.50
–240
—
V
OL
Output LOW Voltage
V
I
OS
V
H
I
CCL
I
CCH
I
CCZ
Short Circuit Current
(4)
Input Hysteresis
Quiescent Power Supply Current
mA
mV
150
0.1
V
CC
= Max.,
V
IN
= GND or V
CC
10
µ
A
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 Vcc = 3.3V, +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. This parameter is guaranteed but not tested.
5. V
OH
= V
CC
–0.6V at rated current.
2532 lnk 05
8.1
3
IDT74FCT163244/A/C
3.3V 16-BIT BUFFER/LINE DRIVER
COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
(4)
V
CC
= Max.
Outputs Open
50% Duty Cycle
x
OE
= GND
One Input Toggling
V
CC
= Max.
Outputs Open
fi = 10MHz
50% Duty Cycle
x
OE
= GND
One Bit Toggling
V
CC
= Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
x
OE
= GND
Sixteen Bits Toggling
V
IN
= V
CC
–0.6V
V
IN
= GND
V
IN
= V
CC
V
IN
= GND
V
IN
= V
CC
–0.6V
V
IN
= GND
—
0.5
0.8
V
IN
= V
CC
V
IN
= GND
—
50
75
µA/
MHz
V
CC
= Max.
Test Conditions
(1)
V
IN
= V
CC
– 0.6V
(3)
Min.
—
Typ.
(2)
2.0
Max.
30
Unit
µA
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
V
IN
= GND
—
0.5
0.8
mA
—
2.0
3.0
(5)
—
2.0
3.3
(5)
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
= 3.3V, +25°C ambient.
3. Per TTL driven input; 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
N
CP
/2 + fiNi)
I
CC
= Quiescent Current (I
CCL,
I
CCH
and I
CCZ
)
∆I
CC
= Power Supply Current for a TTL High Input
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
f
i
= Input Frequency
N
i
= Number of Inputs at fi
2532 tbl 06
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
(4)
FCT163244
Symbol
Parameter
Condition
(1)
Min.
(2)
Max.
FCT163244A
Min.
(2)
Max.
FCT163244C
Min.
(2)
Max.
Unit
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SK
(o)
Propagation Delay
xAx to xYx
Output Enable Time
Output Disable Time
Output Skew
(3)
C
L
= 50pF
R
L
= 500Ω
1.5
1.5
1.5
—
6.5
8.0
7.0
0.5
1.5
1.5
1.5
—
4.8
6.2
5.6
0.5
1.5
1.5
1.5
—
4.1
5.8
5.2
0.5
ns
ns
ns
ns
2532 tbl 07
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. Propagation Delays and Enable/Disable times are with V
CC
= 3.3V
±0.3V,
Normal Range. For V
CC
= 2.7V to 3.6V, Extended Range, all Propagation Delays
and Enable/Disable times should be degraded by 20%.
8.1
4
IDT74FCT163244/A/C
3.3V 16-BIT BUFFER/LINE DRIVER
COMMERCIAL TEMPERATURE RANGES
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
6V
V
CC
SWITCH POSITION
Open
GND
500
Ω
V
Pulse
Generator
R
T
IN
V
D.U.T.
OUT
Test
Open Drain
Disable Low
Enable Low
Disable High
Enable High
All Other tests
Switch
6V
50pF
C
L
500
Ω
SET-UP, HOLD AND RELEASE TIMES
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
t
SU
t
H
t
REM
t
SU
t
H
PROPAGATION DELAY
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
←
GND
Open
2532 lnk 08
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
=
Termination resistance: should be equal to Z
OUT
of the Pulse
Generator.
2532 drw 05
PULSE WIDTH
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
t
W
HIGH-LOW-HIGH
PULSE
1.5V
1.5V
2532 drw 07
2532 drw 06
ENABLE AND DISABLE TIMES
ENABLE
CONTROL
INPUT
t
PZL
OUTPUT
NORMALLY SWITCH
6V
LOW
t
PZH
OUTPUT
NORMALLY
HIGH
SWITCH
GND
3V
1.5V
t
PHZ
0.3V
1.5V
0V
0V
2532 drw 09
DISABLE
3V
1.5V
t
PLZ
0V
3V
0.3V
V
OL
V
OH
2532 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.
3. If V
CC
is below 3V, input voltage swings should be adjusted not to
exceed V
CC
.
8.1
5
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