PI74FCT16245ATKX [PERICOM]
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| 型号： | PI74FCT16245ATKX |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | 暂无描述 |
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PI74FCT16245T
PI74FCT162245T
PI74FCT162H245T
Fast CMOS 16-Bit
Bidirectional Transceivers
Product Features
Product Description
Common Features
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced using the Company’s advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
• PI74FCT16245T, PI74FCT162245T and PI74FCT162H245
are high-speed, low-power devices with high-current drive
ThePI74FCT16245T,PI74FCT162245T,andPI74FCT162H245T
are 16-bit bidirectional transceivers designed for asynchronous
two-waycommunicationbetweendatabuses.Thedirectioncontrol
input pin (xDIR) determines the direction of data flow through the
bidirectional transceiver. The Direction and Ouput Enable controls
are designed to operate these devices as either two independent
8-bit transceivers or one 16-bit transceiver. The output enable (OE)
input, when HIGH, disables both A and B ports by placing them in
HIGH Z condition.
• V = 5V ± 10%
CC
• Hysteresis on all inputs
• Packages available:
– 48-pin 240 mil wide plastic TSSOP (A48)
– 48-pin 173 mil wide plastic TVSOP (JEDEC TSSOP K48)
– 48-pin 300 mil wide plastic SSOP (V48)
PI74FCT16245T Features
• High output drive: I = –32mA; I = 64mA
OH
OL
• Power off disable outputs permit “live insertion”
• Typical V (Output Ground Bounce)
The PI74FCT16245T output buffers are designed with a Power-
Off disable allowing “live insertion” of boards when used as
backplane drivers.
OLP
< 1.0V at V = 5V, T = 25°C
CC
A
The PI74FCT162245T has ±24mA balanced output drivers. It is
designed with current limiting resistors at its outputs to control the
output edge rate resulting in lower ground bounce and undershoot.
This eliminates the need for external terminating resistors for most
interface applications.
PI74FCT162245T Features
• Balanced output drivers: ±24mA
• Reduced system switching noise
• Typical V
(Output Ground Bounce)
OLP
< 0.6V at V = 5V, T = 25°C
CC
A
The PI74FCT162H245T has “Bus Hold” which retains the input’s
last state whenever the input goes to high-impedance preventing
“floating”inputsandeliminatingtheneedforpull-up/downresistors.
PI74FCT162H245T Features
• Bus Hold retains last active bus state during Three-State
• Eliminates the need for external pull-up resistors
Logic Block Diagram
PS2032D
05/17/99
1
PI74FCT16245T/162245T/162H245T
Fast CMOS 16-Bit Bidirectional Tranceivers
Product Pin Description
Truth Table
(1)
Inputs
Pin Name
xOE
Description
(1)
xOE
L
xDIR
Outputs
3-State Enable Inputs (Active LOW)
Direction Control Input
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
xDIR
xAx
(1)
L
Side A Inputs or 3-State Outputs
(1)
H
xBx
Side B Inputs or 3-State Outputs
Note:
GND
Ground
Power
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
V
CC
Note:
1. For the PI74FCT162H245T, these pins have “Bus Hold.”
All other pins are standard, outputs, or I/Os.
Product Pin Configuration
48-Pin
V48
A48
K48
PS2032D
05/17/99
2
PI74FCT16245T/162245T/162H245T
Fast CMOS 16-Bit Bidirectional Tranceivers
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ...........................................................–65°C to +150°C
Ambient Temperature with Power Applied ..........................–40°C to +85°C
Note:
Stresses greater than those listed under 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 condi-
tions 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.
Supply Voltage to Ground Potential (Inputs & V Only) .. –0.5V to +7.0V
CC
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 ............................................................................. 120mA
Power Dissipation................................................................................... 1.0W
DC Electrical Characteristics (Over the Operating Range, T = –40°C to +85°C, V = 5.0V ±10%)
A
CC
Parameters Description
Test Conditions(1)
Min. Typ.(2) Max. Units
VIH
VIL
IIH
IIH
IIH
IIH
IIL
IIL
IIL
Input HIGH Voltage
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Standard Input, VCC = Max.
Standard I/O, VCC = Max.
Bus Hold Input(4), VCC = Max.
Bus Hold I/O(4), VCC = Max.
Standard Input, VCC = Min.
Standard I/O, VCC = Min.
Bus Hold Input(4), VCC = Min.
Bus Hold I/O(4), VCC = Min.
Bus Hold Input(4), VCC = Min.
2.0
V
V
Input LOW Voltage
Input HIGH Current
Input HIGH Current
Input HIGH Current
Input HIGH Current
Input LOW Current
Input LOW Current
Input LOW Current
Input LOW Current
Bus Hold
Sustain Current
High Impedance
Output Current
Clamp Diode Voltage
Short Circuit Current
Output Drive Current
Input Hysteresis
0.8
1
1
±100
±100
–1
–1
±100
±100
VIN = VCC
µA
µA
µA
µA
µA
µA
µA
µA
µA
VIN = VCC
VIN = VCC
VIN = VCC
VIN = GND
VIN = GND
VIN = GND
VIN = GND
VIN = 2.0V
VIN = 0.8V
VOUT = 2.7V
VOUT = 0.5V
IIL
IBHH
IBHL
IOZH
IOZL
VIK
IOS
IO
–50
+50
(5)
(5)
VCC = Max.
VCC = Max.
VCC = Min., IIN = –18mA
VCC = Max.(3), VOUT = GND
VCC = Max.(3), VOUT = 2.5V
1
–1
–1.2
–200
–180
µA
µA
V
mA
mA
mV
–0.7
–140
–80
–50
VH
100
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 = 5.0V, +25°C ambient and maximum loading.
CC
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Pins with Bus Hold are identified in the pin description.
5. This specification does not apply to bi-directional functionalities with Bus Hold.
PS2032D
05/17/99
3
PI74FCT16245T/162245T/162H245T
Fast CMOS 16-Bit Bidirectional Tranceivers
PI74FCT16245T Output Drive Characteristics (Over the Operating Range)
Parameters Description
Test Conditions(1)
Output HIGH Voltage VCC = Min., VIN = VIH or VIL
Min. Typ.(2) Max. Units
VOH
IOH = –3.0mA
IOH = –15.0mA
IOH = –32.0mA
IOL = 64mA
2.5
2.4
2.0
3.5
3.5
3.0
0.2
—
V
VOL
IOFF
Output LOW Voltage
Power Down Disable
VCC = Min., VIN = VIH or VIL
VCC = 0V, VIN or VOUT ≤4.5V
0.55
V
—
±100
µA
PI74FCT162245T/162H245T Output Drive Characteristics (Over the Operating Range)
Parameters Description
Test Conditions(1)
Output HIGH Voltage VCC = Min., VIN = VIH or VIL
Min. Typ.(2) Max. Units
VOH
VOL
IODL
IODH
IOH = –24.0mA
IOL = 24mA
2.4
3.3
0.3
115
–115
V
V
mA
mA
Output LOW Voltage
Output LOW Current
Output HIGH Current VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3)
VCC = Min., VIN = VIH or VIL
VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3)
0.55
150
60
–60
–150
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
Test Conditions
Typ.
Max.
Units
CIN
Input Capacitance
Output Capacitance
VIN = 0V
4.5
5.5
6
8
pF
pF
COUT
VOUT = 0V
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C 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 determined by device characterization but is not production tested.
PS2032D
05/17/99
4
PI74FCT16245T/162245T/162H245T
Fast CMOS 16-Bit Bidirectional Tranceivers
Power Supply Characteristics
(1)
(2)
Parameters Description
Test Conditions
Min. Typ.
Max. Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
0.1
0.5
60
500
µA
(3)
∆ICC
ICCD
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.4V
1.5
mA
Supply Current per
VCC = Max.,
Outputs Open
VIN = VCC
VIN = GND
100
µA/
MHz
(4)
Input per MHz
XOE = xDIR = GND
One Bit Toggling
50% Duty Cycle
(5)
IC
Total Power Supply
Current
VCC = Max.,
Outputs Open
fI = 10 MHZ
VIN = VCC
VIN = GND
0.7
2.5
mA
(6)
50% Duty Cycle
XOE = xDIR = GND
(5)
(5)
One Bit Toggling
VIN = 3.4V
VIN = GND
0.9
2.5
3.3
5.5
VCC = Max.,
VIN = VCC
Outputs Open
VIN = GND
fI = 2.5 MHZ
50% Duty Cycle
XOE = xDIR = GND
(5)
16 Bits Toggling
VIN = 3.4V
VIN = GND
6.5
17.5
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); 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 + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
PS2032D
05/17/99
5
PI74FCT16245T/162245T/162H245T
Fast CMOS 16-Bit Bidirectional Tranceivers
PI74FCT16245T Switching Characteristics over Operating Range
16245T
16245AT 16245CT 16245DT
16245ET
Com.
Com.
Com. Com. Com.
Parameters
Description
Conditions(1) Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Units
t
t
PLH
PHL
Propagation Delay(2)
C
R
L
L
= 50pF
= 500Ω
1.5
1.5
1.5
1.5
1.5
7.0
9.5
7.5
9.5
7.5
1.5
1.5
1.5
1.5
1.5
4.6
6.2
5.0
6.2
5.0
1.5
1.5
1.5
1.5
1.5
4.1
5.8
4.8
5.8
4.8
1.5
1.5
1.5
1.5
1.5
3.8
5.0
4.3
5.0
4.3
1.5
1.5
1.5
1.5
1.5
3.2
4.4
4.0
4.8
4.0
ns
ns
ns
ns
ns
A
TO B, B TO
A
t
t
PZH
PZL
Output Enable Time
OE to A OR
Output Disable Time(3)
OE to A OR
Output Enable Time
DIR to A OR B(3)
Output Disable Time
DIR to A OR B(3)
X
B
t
t
PHZ
PLZ
X
B
t
t
PZH
PZL
X
t
t
PHZ
PLZ
X
tSK(o)
Output Skew(4)
—
0.5
—
0.5
—
0.5
—
0.5
—
0.5
ns
PI74FCT162245T Switching Characteristics over Operating Range
162245T
162245AT
162245CT
162245DT
Com.
162245ET
Com.
Com.
Com.
Com.
Parameters
Description
Conditions(1) Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Units
t
t
PLH
PHL
Propagation Delay(2)
C
R
L
L
= 50pF
= 500Ω
1.5
1.5
1.5
1.5
1.5
7.0
9.5
7.5
9.5
7.5
1.5
1.5
1.5
1.5
1.5
4.6
6.2
5.0
6.2
5.0
1.5
1.5
1.5
1.5
1.5
4.1
5.8
4.8
5.8
4.8
1.5
1.5
1.5
1.5
1.5
3.8
5.0
4.3
5.0
4.3
1.5
1.5
1.5
1.5
1.5
3.2
4.4
4.0
4.8
4.0
ns
ns
ns
ns
ns
A
TO B, B TO
A
t
t
PZH
PZL
Output Enable Time
OE to A OR
Output Disable Time(3)
OE to A OR
Output Enable Time
DIR to A OR B(3)
Output Disable Time
DIR to A OR B(3)
X
B
t
t
PHZ
PLZ
X
B
t
t
PZH
PZL
X
t
t
PHZ
PLZ
X
t
SK(o)
Output Skew(4)
—
0.5
—
0.5
—
0.5
—
0.5
—
0.5
ns
PI74FCT162H245T Switching Characteristics over Operating Range
162245T 162245AT 162245CT 162245DT 162245ET
Com. Com. Com. Com. Com.
Parameters
Description
Conditions(1) Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Units
t
t
PLH
PHL
Propagation Delay(2)
C
R
L
L
= 50pF
= 500Ω
1.5
1.5
1.5
1.5
1.5
7.0
9.5
7.5
9.5
7.5
1.5
1.5
1.5
1.5
1.5
4.6
6.2
5.0
6.2
5.0
1.5
1.5
1.5
1.5
1.5
4.1
5.8
4.8
5.8
4.8
1.5
1.5
1.5
1.5
1.5
3.8
5.0
4.3
5.0
4.3
1.5
1.5
1.5
1.5
1.5
3.2
4.4
4.0
4.8
4.0
ns
ns
ns
ns
ns
A
TO B, B TO
A
t
t
PZH
PZL
Output Enable Time
OE to A OR
Output Disable Time(3)
OE to A OR
Output Enable Time
DIR to A OR B(3)
Output Disable Time
DIR to A OR B(3)
X
B
t
t
PHZ
PLZ
X
B
t
t
PZH
PZL
X
t
t
PHZ
PLZ
X
tSK(o)
Output Skew(4)
—
0.5
—
0.5
—
0.5
—
0.5
—
0.5
ns
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
4. 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
PS2032D
05/17/99
6
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