IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT BUS
TRANSCEIVER/REGISTER
IDT74FCT163646A/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)
• V
CC
= 3.3V ± 0.3V, Normal Range, or V
CC
= 2.7V to 3.6V, Extended
Range
• CMOS power levels (0.4μ W typ. static)
μ
• 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
• Available in SSOP and TSSOP packages
DESCRIPTION:
The FCT163646 16-bit registered transceiver is built using advanced
dual metal CMOS technology. These high-speed, low-power devices are
organized as two independant 8-bit bus transceivers with 3-state D-type
registers. The control circuitry is organized for multiplexed transmission of
data between A bus and B bus either directly or from the internal storage
registers. Each 8-bit transceiver/register features direction control (xDIR),
over-riding Output Enable control (xOE) and Select lines (xSAB and xSBA)
to select either real-time data or stored data. Separate clock inputs are
provided for A and B port registers. Data on the A or B data bus, or both,
can be stored in the internal registers by the low-to-high transitions at the
appropriate clock pins. Flow-through organization of signal pins simplifies
layout. All inputs are designed with hysteresis for improved noise margin.
The FCT163646 has series current limiting resistors. This offers low
ground bounce, minimal undershoot, and controlled output fall times-
reducing the need for external series terminating resistors.
FUNCTIONAL BLOCK DIAGRAM
56
1
OE
1
DIR
1
CLKBA
1
SBA
1
CLKAB
1
SAB
3
2
SAB
B REG
1
55
2
CLKBA
54
2
2
SBA
2
CLKAB
2
OE
29
28
2
DIR
30
31
27
26
B REG
D
C
1
A
1
5
A REG
52
1
B
1
2
A
1
15
A REG
D
C
42
2
B
1
D
C
D
C
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2002 Integrated Device Technology, Inc.
APRIL 2002
DSC-2778/2
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1DIR
1CLKAB
1
SAB
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Description
Max
–0.5 to +4.6
–0.5 to 7
–0.5 to V
CC
+0.5
–65 to +150
–60 to +60
Unit
V
V
V
°C
mA
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1OE
1CLKBA
1
SBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
V
TERM
(2)
Terminal Voltage with Respect to GND
V
TERM
(3)
Terminal Voltage with Respect to GND
V
TERM
(4)
Terminal Voltage with Respect to GND
T
STG
I
OUT
Storage Temperature
DC Output Current
GND
1
A
1
1
A
2
GND
1
B
1
1
B
2
V
CC
1
A
3
1
A
4
1
A
5
V
CC
1
B
3
1
B
4
1
B
5
GND
1
A
6
1
A
7
1
A
8
2
A
1
2
A
2
2
A
3
GND
1
B
6
1
B
7
1
B
8
2
B
1
2
B
2
2
B
3
GND
2
B
4
2
B
5
2
B
6
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. Vcc terminals.
3. Input terminals.
4. Outputs and I/O terminals.
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
A
4
2
A
5
2
A
6
NOTE:
1. This parameter is measured at characterization but not tested.
V
CC
2
A
7
2
A
8
V
CC
2
B
7
2
B
8
PIN DESCRIPTION
Pin Names
xAx
xBx
xCAB, xCBA
xSAB, xSBA
xDIR , xOE
Description
Data Register A Inputs, Data Register B Outputs
Data Register B Inputs, Data Register A Outputs
Clock Pulse Inputs
Output Data Source Select Inputs
Output Enable Inputs
GND
2
SAB
2
CLKAB
2
DIR
GND
2
SBA
2
CLKBA
2
OE
SSOP/ TSSOP
TOP VIEW
FUNCTION TABLE
(1)
xOE
H
H
L
L
L
L
xDIR
X
X
L
L
H
H
Inputs
xCLKAB
xCLKBA
H or L
H or L
↑
X
X
X
H or L
↑
X
H or L
X
X
Data I/O
xSAB
X
X
X
X
L
H
xSBA
X
X
L
H
X
X
Output
Input
Input
Output
xAx
Input
(2)
xBx
Input
Operation or Function
Isolation
Store A and B Data
Real Time B Data to A Bus
Stored B Data to A Bus
Real Time A Data to B Bus
Stored A Data to B Bus
NOTES:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
↑
=
LOW-to-HIGH Transition
2. The data output functions may be enabled or disabled by various signals at the
xOE
or xDIR inputs. Data input functions are always enabled, i.e. data at the bus pins will
be stored on every LOW-to-HIGH transition of the clock inputs.
2
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 2.7V to 3.6V
Symbol
V
IH
Parameter
Input HIGH Level (Input pins)
Input HIGH Level (I/O pins)
V
IL
I
IH
Input LOW Level (Input and I/O pins) Guaranteed Logic LOW Level
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
I
IL
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
I
OZH
I
OZL
V
IK
I
ODH
I
ODL
V
OH
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
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
= 3V
V
IN
= V
IH
or V
IL
V
OL
Output LOW Voltage
V
CC
= Min.
V
IN
= V
IH
or V
IL
V
CC
= 3V
V
IN
= V
IH
or V
IL
I
OS
V
H
I
CCL
I
CCH
I
CCZ
Short Circuit Current
(4)
Input Hysteresis
Quiescent Power Supply Current
V
CC
= Max.
V
IN
= GND or V
CC
V
CC
= Max., V
O
= GND
(3)
—
–60
—
—
–135
150
0.1
–240
—
10
mA
mV
µA
I
OL
= 0.1mA
I
OL
= 16mA
I
OL
= 24mA
I
OL
= 24mA
—
—
—
—
—
0.2
0.3
0.3
0.2
0.4
0.55
0.5
V
I
OH
= –0.1mA
I
OH
= –3mA
I
OH
= –8mA
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
Test Conditions
(1)
Guaranteed Logic HIGH Level
Min.
2
2
–0.5
—
—
—
—
—
—
—
–36
50
V
CC
-0.2
2.4
2.4
(5)
Typ.
(2)
—
—
—
—
—
—
—
—
—
–0.7
–60
90
—
3
3
Max.
5.5
V
CC
+0.5
0.8
±1
±1
±1
±1
±1
±1
–1.2
–110
200
—
—
—
V
V
mA
mA
µA
µA
V
Unit
V
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
= 3.3V, +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. This parameter is guaranteed but not tested.
5. V
OH
= V
CC
–0.6V at rated current.
3
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
BUS
A
BUS
B
BUS
A
BU S
B
xDIR
L
xOE
L
xCLKAB
X
xCLKBA
X
xSAB
X
xSBA
L
xDIR
H
xOE
L
xCLKAB
X
xCLKBA
X
xSAB
L
xSBA
X
Real-Time Transfer
Bus B to A
Real-Time Transfer
Bus A to B
BUS
A
BUS
B
BUS
A
BUS
B
xDIR
H
L
X
xOE
L
L
H
xCLKAB
↑
xCLKBA
X
↑
↑
X
↑
xSAB
X
X
X
xSBA
X
X
X
xDIR
L
H
(1)
xOE
L
L
xCLKAB
X
H or L
xCLKBA
H or L
X
xSAB
X
H
xSBA
H
X
Storage from
A and/or B
Transfer Stored Data
to A and/or B
NOTE:
1. Cannot transfer data to A bus and B bus simultaneously.
4
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
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
= V
CC
- 0.6V
(3)
V
CC
= Max.
Outputs Open
xDIR = xOE = GND
One Input Togging
50% Duty Cycle
V
CC
= Max.,Outputs Open
f
CP
= 10MHz (xCLKBA)
50% Duty Cycle
xDIR = xOE = GND
f
I
= 5MHz
50% Duty Cycle
One Bit Toggling
V
CC
= Max.,Outputs Open
f
CP
= 10MHz (xCLKBA)
50% Duty Cycle
xDIR = xOE = GND
f
I
= 2.5MHz
50% Duty Cycle
Sixteen Bits Toggling
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
= 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
+
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
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
Test Conditions
(1)
Min.
—
Typ.
(2)
2
60
Max.
30
100
Unit
µA
µA/
MHz
V
IN
= V
CC
V
IN
= GND
—
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
V
IN
= GND
—
0.6
1
mA
V
IN
= V
CC
- 0.6V
V
IN
= GND
V
IN
= V
CC
V
IN
= GND
—
0.6
1
—
3
5
(5)
V
IN
= V
CC
- 0.6V
V
IN
= GND
—
3
5.3
(5)
5
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