IDT74FCT163245/A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
3.3V CMOS 16-BIT
BIDIRECTIONAL
TRANSCEIVERS
COMMERCIAL TEMPERATURE RANGE
IDT74FCT163245/A/C
Integrated Device Technology, Inc.
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 FCT163245/A/C 16-bit transceivers are built using
advanced dual metal CMOS technology. These high-speed,
low-power transceivers are ideal for synchronous communi-
cation between two busses (A and B). The Direction and
Output Enable controls are designed to operate these devices
as either two independent 8-bit transceivers or one 16-bit
transceiver. The direction control pin (xDIR) controls the
direction of data flow. The output enable pin (x
OE
) overrides
the direction control and disables both ports. All inputs are
designed with hysteresis for improved noise margin.
FUNCTIONAL BLOCK DIAGRAM
1
DIR
1
OE
1
A
1
1
B
1
1
A
2
1
B
2
1
A
3
1
B
3
1
A
4
1
B
4
1
A
5
1
B
5
1
A
6
1
B
6
1
A
7
1
B
7
1
A
8
1
B
8
2554 drw 01
2
DIR
2
OE
2
A
1
2
B
1
2
A
2
2
B
2
2
A
3
2
B
3
2
A
4
2
B
4
2
A
5
2
B
5
2
A
6
2
B
6
2
A
7
2
B
7
2
A
8
2
B
8
2554 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
©1996
Integrated Device Technology, Inc.
AUGUST 1996
8.2
8.2
DSC-2554/6
11
1
IDT74FCT163245/A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATIONS
PIN DESCRIPTION
Pin Names
x
OE
xDIR
1
OE
1
A
1
1
A
2
Description
Output Enable Input (Active LOW)
Direction Control Input
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
2554 tbl 01
1
DIR
1
B
1
1
B
2
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
xAx
xBx
GND
1
B
3
1
B
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
1
B
5
1
B
6
V
CC
1
A
5
1
A
6
GND
1
B
7
1
B
8
2
B
1
2
B
2
GND
1
A
7
1
A
8
2
A
1
2
A
2
GND
2
B
3
2
B
4
GND
2
A
3
2
A
4
2554 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 condi-
tions above those indicated in the operational sections of this specifica-
tion is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
2. Vcc terminals.
3. Input terminals.
4. Output and I/O terminals.
V
CC
2
B
5
2
B
6
V
CC
2
A
5
2
A
6
FUNCTION TABLE
(1)
Inputs
x
OE
L
L
H
xDIR
L
H
X
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
2554 tbl 02
GND
2
B
7
2
B
8
2
DIR
GND
2
A
7
2
A
8
2
OE
2554 drw 03
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High Impedance
SSOP/
TSSOP/TVSOP
TOP VIEW
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
Parameter
(1)
C
IN
Input
Capacitance
C
I/O
I/O
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
3.5
3.5
Max. Unit
6.0
pF
8.0
pF
2554 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
8.2
2
IDT74FCT163245/A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
COMMERCIAL TEMPERATURE RANGE
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.
2554 lnk 05
8.2
3
IDT74FCT163245/A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
COMMERCIAL TEMPERATURE RANGE
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
x
OE
= xDIR = GND
One Input Toggling
50% Duty Cycle
V
CC
= Max.
Outputs Open
fi =10MHz
50% Duty Cycle
x
OE
= xDIR = GND
One Bit Toggling
V
CC
= Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
x
OE
= xDIR = 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
—
2.0
3.0
(5)
—
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
3.3
(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
2554 tbl 06
8.2
4
IDT74FCT163245/A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
COMMERCIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
(4)
FCT163245
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SK
(o)
Parameter
Condition
(1)
Propagation Delay
C
L
= 50pF
A to B, B to A
R
L
= 500Ω
Output Enable Time
x
OE
to A or B
Output Disable Time
x
OE
to A or B
Output Enable Time
xDIR to A or B
(5)
Output Disable Time
xDIR to A or B
(5)
Output Skew
(3)
Min
.
(2)
1.5
1.5
1.5
1.5
1.5
—
Max.
7.0
9.5
7.5
9.5
7.5
0.5
FCT163245A
Min.
(2)
1.5
1.5
1.5
1.5
1.5
—
Max.
4.6
6.2
5.0
6.2
5.0
0.5
FCT163245C
Min
.
(2)
1.5
1.5
1.5
1.5
1.5
—
Max
.
4.1
5.8
4.8
5.8
4.8
0.5
Unit
ns
ns
ns
ns
ns
ns
2554 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%.
5. This parameter is guaranteed but not tested.
8.2
5
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