PI74FCT163245
3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER
1
PS2054B 01/18/99
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Product Description
Pericom Semiconductor's PI74FCT series of logic circuits are
produced in the Company's advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74FCT163245 is a 16-bit bidirectional transceiver designed
for asynchronous two-way communication between data buses.
The direction control input pin (xDIR) determines the direction of
data flow through the bidirectional transceiver. The Direction and
Output Enable controls are designed to operate this device as either
two independent 8-bit transceivers or one 16-bit transceiver. The
output enable (xOE) input, when HIGH, disables both A and B
ports by placing them in HIGH Z condition.
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PI74FCT163245
Fast CMOS 3.3V 16-Bit
Bidirectional Transceiver
Product Features
Advanced Low Power CMOS Operation
Excellent output drive capability:
Balanced drives (24mA sink and source)
Compatible with LVC
TM
class of products.
Pin compatible with industry standard double-density pinouts
Low ground bounce outputs
Hysteresis on all inputs
Industrial operating temperature range: 40C to +85C
Control inputs can be driven by 3.3V or 5V devices
Multiple center pin and distributed Vcc/GND pins
minimizing switching noise
Packages available:
48-pin 240 mil wide plastic TSSOP (A)
48-pin 300 mil wide plastic SSOP (V)
48-pin 173 mil wide plastic TVSOP (K)
Device models available on request
1
B
0
1
A
0
1
OE
1
DIR
1
B
1
1
A
1
1
B
2
1
A
2
1
B
3
1
A
3
1
B
4
1
A
4
1
B
5
1
A
5
1
B
6
1
A
6
1
B
7
1
A
7
2
B
0
2
A
0
2
OE
2
DIR
2
B
1
2
A
1
2
B
2
2
A
2
2
B
3
2
A
3
2
B
4
2
A
4
2
B
5
2
A
5
2
B
6
2
A
6
2
B
7
2
A
7
Logic Block Diagram
PI74FCT163245
3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER
2
PS2054B 01/18/99
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Product Pin Configuration
Product Pin Description
Pin Name
Description
xOE
3-State Output Enable Inputs (Active LOW)
xDIR
Direction Control Input
xAx
Side A Inputs or 3-State Inputs
xBx
Side B Outputs or 3-State Outputs
GND
Ground
V
CC
Power
Inputs
(1)
X
OE
xDIR
Outputs
(1)
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
Z
Truth Table
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
1
DIR
1
1
B
0
2
1
B
1
3
GND
4
1
B
2
5
1
B
3
6
V
CC
7
1
B
4
8
1
B
5
9
GND
10
1
B
6
11
1
B
7
12
2
B
0
13
2
B
1
14
GND
15
2
B
2
16
2
B
3
17
V
CC
18
2
B
4
19
2
B
5
20
GND
21
2
B
6
22
2
B
7
23
2
DIR
24
1
OE
48
1
A
0
47
1
A
1
46
GND
45
1
A
2
44
1
A
3
43
V
CC
42
1
A
4
41
1
A
5
40
GND
39
1
A
6
38
1
A
7
37
2
A
0
36
2
A
1
35
GND
34
2
A
2
33
2
A
3
32
V
CC
31
2
A
4
30
2
A
5
29
GND
28
2
A
6
27
2
A
7
26
2
OE
25
Note:
1. This parameter is determined by device characterization but is not production tested.
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(1)
Description
Test Conditions
Typ.
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
4.5
6
pF
C
OUT
Output Capacitance
V
OUT
= 0V
5.5
8
pF
48-PIN
V48
A48
K48
PI74FCT163245
3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER
3
PS2054B 01/18/99
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DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 2.7V to 3.6V)
Parameters
Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
V
IH
Input HIGH Voltage (Input pins)
Guaranteed Logic HIGH Level
2.2
--
5.5
V
Input HIGH Voltage (I/O pins)
2.0
--
Vcc+0.5
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.5
--
0.8
V
(Input and I/O pins)
I
IH
Input HIGH Current (Input pins)
V
CC
= Max.
V
IN
= 5.5V
--
--
1
A
Input HIGH Current (I/O pins)
V
CC
= Max.
V
IN
= V
CC
--
--
1
A
I
IL
Input LOW Current (Input pins)
V
CC
= Max.
V
IN
= GND
--
--
1
A
Input LOW Current (I/O pins)
V
CC
= Max.
V
IN
= GND
--
--
1
A
I
OZH
High Impedance Output Current
V
CC
= Max.
V
OUT
= V
CC
--
--
1
A
I
OZL
(3-State Output pins)
V
CC
= Max.
V
OUT
= GND
--
--
1
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18 mA
--
0.7
1.2
V
I
ODH
Output HIGH Current
V
CC
= 3.3V, V
IN
= V
IH
or V
IL
, V
O
= 1.5V
(3)
36
60
110
mA
I
ODL
Output LOW Current
V
CC
= 3.3V, V
IN
= V
IH
or V
IL
, V
O
= 1.5V
(3)
50
90
200
mA
V
OH
Output HIGH Voltage
V
CC
= Min.
I
OH
= 0.1mA Vcc-0.2
--
--
V
V
IN
= V
IH
or V
IL
I
OH
= 3mA
2.4
3.0
--
V
V
CC
= 3.0V,
I
OH
= 8mA
2.4
(5)
3.0
--
V
V
IN
= V
IH
OR
V
IL
I
OH
= 24mA
2.0
--
--
V
V
OL
Output LOW Voltage
V
CC
= Min.
I
OL
= 0.1mA
--
--
0.2
V
V
IN
= V
IH
or V
IL
I
OL
= 16mA
--
0.2
0.4
V
I
OL
= 24mA
--
0.3
0.5
V
I
OS
Short Circuit Current
(4)
V
CC
= Max.
(3)
, V
OUT
= GND
60
85
240
mA
V
H
Input Hysteresis
--
150
--
mV
Storage Temperature ................................................................. 65C to +150C
Ambient Temperature with Power Applied ................................ 40C to +85C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5V to +7.0V
DC Input Voltage ......................................................................... 0.5V to +7.0V
DC Output Current ................................................................................... 120 mA
Power Dissipation ......................................................................................... 1.0W
Note:
Stresses greater than those listed under
MAXIMUM RATINGS may cause perma-
nent 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.
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, +25C ambient and maximum loading.
3. Not more than one output should be shorted 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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
PI74FCT163245
3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER
4
PS2054B 01/18/99
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Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power Supply Current
V
CC
= Max.
V
IN
= GND or V
CC
0.1
10
A
I
CC
Quiescent Power Supply Current
V
CC
= Max.
V
IN
= V
CC
0.6V
(3)
2.0
30
A
TTL Inputs HIGH
I
CCD
Dynamic Power Supply
(4)
V
CC
= Max.,
V
IN
= V
CC
50
75
A/
Outputs Open
V
IN
= GND
MHz
X
OE = xDIR = GND
One Bit Toggling
50% Duty Cycle
I
C
Total Power Supply
V
CC
= Max.,
V
IN
= V
CC
0.6V
0.5
0.8
mA
Current
(6)
Outputs Open
V
IN
= GND
f
I
= 10 MH
Z
50% Duty Cycle
X
OE = xDIR = GND
One Bit Toggling
V
CC
= Max.,
V
IN
= V
CC
0.6V
2.0
3.3
(5)
Outputs Open
V
IN
= GND
f
I
= 2.5 MH
Z
50% Duty Cycle
X
OE = xDIR = GND
16 Bits Toggling
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25C ambient.
3. Per TTL driven input; all other inputs at Vcc 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 Icc 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
I
)
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 f
I
All currents are in milliamps and all frequencies are in megahertz.
PI74FCT163245
3.3V 16-BIT BIDIRECTIONAL TRANSCEIVER
5
PS2054B 01/18/99
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Switching Characteristics over Operating Range
(1)
FCT163245
FCT163245A
FCT163245C
Com.
Com.
Com.
Parameters
Description
Conditions
(2)
Min.
(3)
Max.
Min.
(3)
Max.
Min.
(3)
Max.
Units
t
PLH
Propagation Delay
C
L
= 50pF
1.5
7.0
1.5
4.6
1.5
4.1
ns
t
PHL
A to B, B to A
R
L
= 500
t
PZH
Output Enable Time
1.5
9.5
1.5
6.2
1.5
5.8
ns
t
PZL
xOE to A or B
t
PHZ
Output Disable Time
(4)
1.5
7.5
1.5
5.0
1.5
4.8
ns
t
PLZ
xOE to A or B
t
PZH
Output Enable Time
1.5
9.5
1.5
6.2
1.5
5.8
ns
t
PZL
xDIR to A or B
t
PHZ
Output Disable Time
(4)
1.5
7.5
1.5
5.0
1.5
4.8
ns
t
PLZ
xDIR to A or B
t
SK
(o)
Output Skew
(5)
0.5
0.5
0.5
ns
Notes:
1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V 0.3V, normal range. For Vcc = 2.7V, extended range,
all Propagation Delays and Enable/Disable times should be degraded by 20%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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