1
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
APRIL 2002
INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
2002 Integrated Device Technology, Inc.
DSC-2778/1
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 (0.4
W 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
Available in SSOP and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS
TRANSCEIVER/REGISTER
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.
1
B
1
1
A
1
1
OE
1
DIR
1
SBA
1
SAB
1
CLKBA
1
CLKAB
TO SEVEN OTHER CHANNELS
B REG
A REG
D
C
C
D
2
A
1
2
OE
2
DIR
2
SBA
2
SAB
2
CLKBA
2
CLKAB
2
B
1
TO SEVEN OTHER CHANNELS
B REG
A REG
D
C
C
D
56
1
55
54
2
3
5
52
29
28
30
31
27
26
15
42
2
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
PIN CONFIGURATION
Symbol
Description
Max
Unit
V
TERM
(2)
Terminal Voltage with Respect to GND
0.5 to +4.6
V
V
TERM
(3)
Terminal Voltage with Respect to GND
0.5 to 7
V
V
TERM
(4)
Terminal Voltage with Respect to GND
0.5 to V
CC
+0.5
V
T
STG
Storage Temperature
65 to +150
C
I
OUT
DC Output Current
60 to +60
mA
ABSOLUTE MAXIMUM RATINGS
(1)
(1)
(1)
(1)
(1)
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.
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
C
IN
Input Capacitance
V
IN
= 0V
3.5
6
pF
C
OUT
Output Capacitance
V
OUT
= 0V
3.5
8
pF
CAPACITANCE
(T
A
= +25C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
SSOP/ TSSOP
TOP VIEW
1DIR
1
SAB
GND
1
A
1
V
CC
GND
GND
V
CC
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
48
49
50
51
52
53
54
55
56
1
GND
25
26
27
28
32
31
30
29
1CLKAB
1
A
2
1
A
3
1
A
4
1
A
5
1
A
6
1
A
7
1
A
8
2
A
1
2
A
2
2
A
3
2
A
4
2
A
5
2
A
6
2
A
7
2
A
8
2
SAB
2
CLKAB
2
DIR
1OE
1
SBA
GND
1
B
1
V
CC
GND
GND
V
CC
GND
1CLKBA
1
B
2
1
B
3
1
B
4
1
B
5
1
B
6
1
B
8
2
B
1
2
B
2
2
B
3
2
B
4
2
B
5
2
B
6
2
B
7
2
B
8
2
SBA
2
CLKBA
2
OE
1
B
7
Pin Names
Description
xAx
Data Register A Inputs, Data Register B Outputs
xBx
Data Register B Inputs, Data Register A Outputs
xCAB, xCBA
Clock Pulse Inputs
xSAB, xSBA
Output Data Source Select Inputs
xDIR , xOE
Output Enable Inputs
FUNCTION TABLE
(1)
Inputs
Data I/O
(2)
xOE
xDIR
xCLKAB
xCLKBA
xSAB
xSBA
xAx
xBx
Operation or Function
H
X
H or L
H or L
X
X
Input
Input
Isolation
H
X
X
X
Store A and B Data
L
L
X
X
X
L
Output
Input
Real Time B Data to A Bus
L
L
X
H or L
X
H
Stored B Data to A Bus
L
H
X
X
L
X
Input
Output
Real Time A Data to B Bus
L
H
H or L
X
H
X
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.
3
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
V
IH
Input HIGH Level (Input pins)
Guaranteed Logic HIGH Level
2
--
5.5
V
Input HIGH Level (I/O pins)
2
--
V
CC
+0.5
V
IL
Input LOW Level (Input and I/O pins) Guaranteed Logic LOW Level
0.5
--
0.8
V
I
IH
Input HIGH Current (Input pins)
V
CC
= Max.
V
I
= 5.5V
--
--
1
Input HIGH Current (I/O pins)
V
I
= V
CC
--
--
1
A
I
IL
Input LOW Current (Input pins)
V
I
= GND
--
--
1
Input LOW Current (I/O pins)
V
I
= GND
--
--
1
I
OZH
High Impedance Output Current
V
CC
= Max.
V
O
= V
CC
--
--
1
A
I
OZL
(3-State Output pins)
V
O
= GND
--
--
1
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
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
V
CC
-0.2
--
--
V
IN
= V
IH
or V
IL
I
OH
= 3mA
2.4
3
--
V
V
CC
= 3V
I
OH
= 8mA
2.4
(5)
3
--
V
IN
= V
IH
or V
IL
V
OL
Output LOW Voltage
V
CC
= Min.
I
OL
= 0.1mA
--
--
0.2
V
IN
= V
IH
or V
IL
I
OL
= 16mA
--
0.2
0.4
I
OL
= 24mA
--
0.3
0.55
V
V
CC
= 3V
I
OL
= 24mA
--
0.3
0.5
V
IN
= V
IH
or V
IL
I
OS
Short Circuit Current
(4)
V
CC
= Max., V
O
= GND
(3)
60
135
240
mA
V
H
Input Hysteresis
--
--
150
--
mV
I
CCL
Quiescent Power Supply Current
V
CC
= Max.
--
0.1
10
A
I
CCH
V
IN
= GND or V
CC
I
CCZ
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= 40C to +85C, V
CC
= 2.7V to 3.6V
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, +25C 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.
4
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
BUS
A
BUS
B
xDIR
L
xOE
L
xCLKAB
X
xCLKBA
X
xSAB
X
xSBA
L
BUS
A
BU S
B
xDIR
H
xOE
L
xCLKAB
X
xCLKBA
X
xSAB
L
xSBA
X
BUS
A
BUS
B
xDIR
H
L
X
xOE
L
L
H
xCLKAB
X
xCLKBA
X
xSAB
X
X
X
xSBA
X
X
X
BUS
A
BUS
B
xDIR
L
H
xOE
L
L
xCLKAB
X
H or L
xCLKBA
H or L
X
xSAB
X
H
xSBA
H
X
(1)
Transfer Stored Data
to A and/or B
NOTE:
1. Cannot transfer data to A bus and B bus simultaneously.
Real-Time Transfer
Bus B to A
Real-Time Transfer
Bus A to B
Storage from
A and/or B
5
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
Quiescent Power Supply Current
V
CC
= Max.
--
2
30
A
TTL Inputs HIGH
V
IN
= V
CC
- 0.6V
(3)
I
CCD
Dynamic Power Supply
V
CC
= Max.
V
IN
= V
CC
--
60
100
A/
Current
(4)
Outputs Open
V
IN
= GND
MHz
xDIR = xOE
= GND
One Input Togging
50% Duty Cycle
I
C
Total Power Supply Current
(6)
V
CC
= Max.,Outputs Open
V
IN
= V
CC
--
0.6
1
mA
f
CP
= 10MHz (xCLKBA)
V
IN
= GND
50% Duty Cycle
xDIR = xOE
= GND
f
I
= 5MHz
V
IN
= V
CC
- 0.6V
--
0.6
1
50% Duty Cycle
V
IN
= GND
One Bit Toggling
V
CC
= Max.,Outputs Open
V
IN
= V
CC
--
3
5
(5)
f
CP
= 10MHz (xCLKBA)
V
IN
= GND
50% Duty Cycle
xDIR = xOE
= GND
f
I
= 2.5MHz
V
IN
= V
CC
- 0.6V
--
3
5.3
(5)
50% Duty Cycle
V
IN
= GND
Sixteen Bits Toggling
POWER SUPPLY CHARACTERISTICS
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, +25C 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
fi = Input Frequency
Ni = Number of Inputs at fi
6
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
FCT163646A
FCT163646C
Symbol
Parameter
Condition
(2)
Min.
(3)
Max.
Min.
(3)
Max.
Unit
t
PLH
Propagation Delay
C
L
= 50pF
2
6.3
1.5
5.4
ns
t
PHL
Bus to Bus
R
L
= 500
t
PZH
Output Enable Time
2
9.8
1.5
7.8
ns
t
PZL
xDIR or xOE to Bus
t
PHZ
Output Disable Time
2
6.3
1.5
6.3
ns
t
PLZ
xDIR or xOE to Bus
t
PLH
Propagation Delay
2
6.3
1.5
5.7
ns
t
PHL
Clock to Bus
t
PLH
Propagation Delay
2
7.7
1.5
6.2
ns
t
PHL
xSBA or xSAB to Bus
t
SU
Set-up Time HIGH or LOW, Bus to Clock
2
--
2
--
ns
t
H
Hold Time HIGH or LOW, Bus to Clock
1.5
--
1.5
--
ns
t
W
Clock Pulse Width HIGH or LOW
5
--
5
--
ns
t
SK
(o)
Output Skew
(4)
--
0.5
--
0.5
ns
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
(1)
NOTES:
1. 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%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
7
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
INDUSTRIAL TEMPERATURE RANGE
Pulse
Generator
R
T
D.U.T.
V
CC
V
IN
C
L
V
OUT
50pF
500
500
Open
GND
6v
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
t
SU
t
H
t
REM
t
SU
t
H
PRESET
CLEAR
CLOCK ENABLE
ETC.
HIGH-LOW-HIGH
PULSE
LOW-HIGH-LOW
PULSE
t
W
1.5V
1.5V
SAME PHASE
INPUT TRANSITION
3V
1.5V
0V
1.5V
V
OH
t
PLH
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
3V
1.5V
0V
t
PLH
t
PHL
t
PHL
V
OL
CONTROL
INPUT
3V
1.5V
0V
3V
0V
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
6V
SWITCH
GND
V
OL
0.3V
0.3V
t
PLZ
t
PZL
t
PZH
t
PHZ
3V
0V
1.5V
1.5V
ENABLE
DISABLE
V
OH
TEST CIRCUITS AND WAVEFORMS
Propagation Delay
Test Circuits for All Outputs
Enable and Disable Times
Set-up, Hold, and Release Times
Pulse Width
Test
Switch
Open Drain
Disable Low
6V
Enable Low
Disable High
GND
Enable High
All Other Tests
Open
SWITCH POSITION
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator.
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
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT163646A/C
3.3V CMOS 16-BIT BUS TRANSCEIVER/REGISTER
ORDERING INFORMATION
CORPORATE HEADQUARTERS
for SALES:
for Tech Support:
2975 Stender Way
800-345-7015 or 408-727-6116
logichelp@idt.com
Santa Clara, CA 95054
fax: 408-492-8674
(408) 654-6459
www.idt.com
4/19/2002 Removed B speed grade
DATA SHEET DOCUMENT HISTORY
XX
Temp. Range
XXXX
Device Type
X
Package
PV
PA
Shrink Small Outline Package
Thin Shrink Small Outline Package
646A
646C
Non-Inverting 16-Bit Transceiver/Register
- 40C to +85C
74
IDT
FCT
XXX
Family
163
Double-Density 3.3Volt
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