IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT
BIDIRECTIONAL
TRANSCEIVER
IDT74FCT163245A/C
FEATURES:
DESCRIPTION:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range, or VCC = 2.7V to 3.6V, Extended
Range
μ W typ. static)
• CMOS power levels (0.4μ
• 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, TSSOP, and TVSOP packages
The FCT163245 16-bit transceivers are built using advanced dual
metal CMOS technology. These high-speed, low-power transceivers are
ideal for asynchronous communication between two buses (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 (xOE) overrides the direction control and disables both ports.
All inputs are designed with hysteresis for improved noise margin.
FUNCTIONAL BLOCK DIAGRAM
24
1
1 DIR
2 DIR
48
1A1
25
1OE
2OE
36
47
2A1
2
13
1B1
1A2
3
2A2
2A3
2B3
32
6
2A4
2A5
19
1B5
40
2B5
29
9
2A6
20
1B6
38
1A8
2B4
30
8
1A7
17
1B4
41
1A6
16
1B3
43
1A5
2B2
33
5
1A4
14
1B2
44
1A3
2B1
35
46
2B6
27
11
2A7
37
2A8
12
22
1B7
23
1B8
2B7
26
2B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
SEPTEMBER 2009
1
© 2009 Integrated Device Technology, Inc.
DSC-2554/13
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
Description
Max
Unit
VTERM(2)
Terminal Voltage with Respect to GND
–0.5 to +4.6
V
1OE
VTERM(3)
Terminal Voltage with Respect to GND
–0.5 to 7
V
VTERM(4)
Terminal Voltage with Respect to GND
–0.5 to VCC+0.5
V
TSTG
Storage Temperature
–65 to +150
°C
IOUT
DC Output Current
–60 to +60
mA
1DIR
1
48
1B1
2
47
1A1
1B2
3
46
1A2
GND
4
45
GND
1B3
5
44
1A3
1B4
6
43
1A4
VCC
7
42
VCC
1B5
8
41
1A5
1B6
9
40
1A6
GND
10
39
GND
1B7
11
38
1A7
1B8
12
37
1A8
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 (TA = +25°C, F = 1.0MHz)
Parameter(1)
Symbol
Conditions
Typ.
Max.
Unit
CIN
Input Capacitance
VIN = 0V
3.5
6
pF
COUT
Output Capacitance
VOUT = 0V
3.5
8
pF
2B1
13
36
2A1
2B2
14
35
2A2
GND
15
34
GND
2B3
16
33
2A3
2B4
17
32
2A4
VCC
18
31
VCC
Pin Names
2B5
19
30
2A5
xOE
2B6
20
29
2A6
GND
21
28
GND
2B7
22
27
2A7
2B8
23
26
2A8
2DIR
24
25
2OE
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Description
Output Enable Input (Active LOW)
xDIR
Direction Control Input
xAx
Side A Inputs or 3-State Outputs
xBx
Side B Inputs or 3-State Outputs
FUNCTION TABLE(1)
Inputs
SSOP/ TSSOP/ TVSOP
TOP VIEW
xOE1
xDIR
L
L
Bus B Data to Bus A
L
H
Bus A Data to Bus B
H
X
High Z State
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-impedance
2
Outputs
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 2.7V to 3.6V
Symbol
VIH
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
2
—
5.5
V
2
—
VCC+0.5
–0.5
—
0.8
VI = 5.5V
—
—
±1
Input HIGH Current (I/O pins)
VI = VCC
—
—
±1
Input LOW Current (Input pins)
VI = GND
—
—
±1
Input LOW Current (I/O pins)
VI = GND
—
—
±1
VO = VCC
—
—
±1
VO = GND
—
—
±1
—
–0.7
–1.2
V
–36
–60
–110
mA
mA
Parameter
Input HIGH Level (Input pins)
Guaranteed Logic HIGH Level
Input HIGH Level (I/O pins)
VIL
Input LOW Level (Input and I/O pins) Guaranteed Logic LOW Level
IIH
Input HIGH Current (Input pins)
IIL
IOZH
High Impedance Output Current
IOZL
(3-State Output pins)
VIK
Clamp Diode Voltage
IODH
Output HIGH Current
VCC = Max.
VCC = Max.
VCC = Min., IIN = –18mA
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V
(3)
(3)
IODL
Output LOW Current
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V
VOH
Output HIGH Voltage
VCC = Min.
IOH = –0.1mA
VIN = VIH or VIL
IOH = –3mA
VCC = 3V
IOH = –8mA
50
90
200
VCC-0.2
—
—
2.4
3
—
3
—
(5)
2.4
V
µA
µA
V
VIN = VIH or VIL
VOL
Output LOW Voltage
VCC = Min.
IOL = 0.1mA
—
—
0.2
VIN = VIH or VIL
IOL = 16mA
—
0.2
0.4
IOL = 24mA
—
0.3
0.55
IOL = 24mA
—
0.3
0.5
–60
–135
–240
mA
—
150
—
mV
—
0.1
10
µA
VCC = 3V
V
VIN = VIH or VIL
(4)
IOS
Short Circuit Current
VH
Input Hysteresis
ICCL
ICCH
ICCZ
Quiescent Power Supply Current
VCC = Max., VO = GND(3)
—
VCC = Max.
VIN = GND or VCC
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 VCC = 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. VOH = VCC–0.6V at rated current.
3
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
—
2
30
µA
VIN = VCC
VIN = GND
—
50
75
µA/
MHz
VCC = Max.,Outputs Open
fI = 10MHz
50% Duty Cycle
VIN = VCC
VIN = GND
—
0.5
0.8
mA
xOE = xDIR = GND
One Bit Toggling
VIN = VCC - 0.6V
VIN = GND
—
0.5
0.8
VCC = Max.,Outputs Open
VIN = VCC
—
2
3(5)
fI = 2.5MHz
50% Duty Cycle
VIN = GND
xOE = xDIR = GND
VIN = VCC - 0.6V
—
2
3.3(5)
Sixteen Bits Toggling
VIN = GND
Symbol
Parameter
ΔICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC - 0.6V(3)
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
xOE = xDIR = GND
One Input Togging
50% Duty Cycle
Total Power Supply Current(6)
IC
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 VCC = 3.3V, +25°C 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. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCPNCP/2 + fiNi)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
ΔICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fi = Input Frequency
Ni = Number of Inputs at fi
4
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1)
Symbol
Parameter
Condition(2)
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Propagation Delay
A to B, B to A
Output Enable Time
xOE to A or B
Output Disable Time
xOE to A or B
Output Enable Time
xDIR to A or B(4)
Output Disable Time
xDIR to A or B(4)
Output Skew(5)
CL = 50pF
RL = 500Ω
FCT163245A
Min.(3)
Max.
FCT163245C
Min.(3)
Max.
Unit
1.5
4.6
1.5
4.1
ns
1.5
6.2
1.5
5.8
ns
1.5
5
1.5
4.8
ns
1.5
6.2
1.5
5.8
ns
1.5
5
1.5
4.8
ns
—
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 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. This parameter is guaranteed but not tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
5
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
SWITCH POSITION
6v
Open
V CC
500Ω
GND
V OUT
VIN
Pulse
Generator
D.U.T.
50pF
RT
500Ω
CL
Test
Switch
Open Drain
Disable Low
Enable Low
6V
Disable High
Enable High
GND
All Other Tests
Open
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Test Circuits for All Outputs
DATA
INPUT
tH
tSU
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
PRESET
CLEAR
CLOCK ENABLE
ETC.
tREM
tSU
3V
1.5V
0V
3V
1.5V
0V
LOW-HIGH-LOW
PULSE
1.5V
tW
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
3V
1.5V
0V
tH
Pulse Width
Set-up, Hold, and Release Times
ENABLE
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPHL
3V
1.5V
0V
VOH
1.5V
VOL
DISABLE
3V
CONTROL
INPUT
tPZL
OUTPUT
NORMALLY
LOW
3V
1.5V
0V
SWITCH
6V
tPLZ
3V
1.5V
tPZH
OUTPUT
NORMALLY
HIGH
Propagation Delay
SWITCH
GND
1.5V
0V
3V
0.3V
VOL
tPHZ
0.3V
1.5V
0V
VOH
0V
Enable and Disable Times
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
3. if VCC is below 3V, input voltage swings should be adjusted not to exceed VCC.
6
IDT74FCT163245A/C
3.3V CMOS 16-BIT BIDIRECTIONAL TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
XX
FCT XXX
Temp. Range
Family
XXXX
Device Type
X
Package
PVG
PAG
PFG
Shrink Small Outline Package - Green
Thin Shrink Small Outline Package - Green
Thin Very Small Outline Package - Green
245A
245C
Non-Inverting 16-Bit Bidirectional Transceiver
163
Double-Density 3.3Volt
74
− 40°C to +85°C
Datasheet Document History
09/10/09 Pg.7
Updated the ordering information by removing the "IDT" notation and non RoHS part.
7
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