21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT2861T
10-Bit Non-Inverting BusTransceiver
Product Features
PI74FCT2861T is pin compatible with bipolar FAST
Series at a higher speed and lower power consumption
25Ω series resistor on all outputs
TTL input and output levels
Extremely low static power
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
Packages available:
24-pin 300 mil wide plastic DIP (P24)
24-pin 150 mil wide plastic QSOP (Q24)
24-pin 150 mil wide plastic TQSOP (R24)
24-pin 300 mil wide plastic SOIC (S24)
Product Description
Pericom Semiconductors PI74FCT series of logic circuits are
produced in the Companys advanced 0.8 micron CMOS technology,
achieving industry leading speed grades.
The PI74FCT286T bus transceiver provides high-performance bus
interface buffering for wide data/address paths carrying parity.
They are designed for high-capacitance load drive capability while
providing bus loading at both inputs and outputs.
Logic Block Diagram
T
0
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
T
9
OER
R
0
R
1
R
2
R
3
R
4
R
5
R
6
R
7
R
8
R
9
OET
10-Bit Product Configuration
Product Pin Description
Pin Name
R
N
T
N
OER
N
OET
N
GND
V
CC
Description
Receive Inputs/Outputs
Transmit Inputs/Outputs
Output Enable Receive Mode
Output Enable Transmit Mode
Ground
Power
OER
R
0
R
1
R
2
R
3
R
4
R
5
R
6
R
7
R
8
R
9
GND
1
2
3
4
5
6
7
8
9
10
11
12
24-PIN
P24
Q24
R24
S24
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
T
0
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
T
9
OET
Truth Table
(1)
(Non-inverting)
Inputs
Outputs
Function
High-Z
Transmitting
Transmitting
Receiving
Receiving
OET
N
OER
N
H
H
L
L
H
H
H
H
L
L
R
N
X
L
H
N/A
N/A
T
N
X
N/A
N/A
L
H
R
N
Z
N/A
N/A
L
H
T
N
Z
L
H
N/A
N/A
Note:
1. H = High Voltage Level L = Low Voltage Level
X = Don't Care
NA = Not Applicable
Z = High Impedance
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PI74FCT2861T
10-Bit Non-Inverting Bus Transceiver
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................................. –55°C to +125°C
Ambient Temperature with Power Applied .................................. -40°C to +85°C
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 ......................................................................................... 0.5W
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 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.
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 5V ± 5%)
Parameters Description
V
OH
V
OL
V
IH
V
IL
I
IH
I
IL
I
OZH
I
OZL
I
I
V
IK
I
OS
I
OFF
V
H
Output HIGH Voltage
Output LOW Current
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High Impedance
Output Current
Input HIGH Current
Clamp Diode Voltage
Short Circuit Current
Power Down Disable
Input Hysteresis
V
CC
= Max., V
IN
= V
CC
(Max.)
V
CC
= Min., I
IN
= –18 mA
V
CC
= Max.
(3)
, V
OUT
= GND
V
CC
= GND, V
OUT
= 4.5V
–60
—
–0.7
–120
—
200
100
Test Conditions
(1)
V
CC
= Min., V
IN
= V
IH
or V
IL
V
CC
= Min., V
IN
= V
IH
or V
IL
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.
V
IN
= V
CC
V
IN
= GND
V
OUT
= 2.7V
V
OUT
= 0.5V
I
OH
= –15.0 mA
I
OL
= 12 mA
2.0
0.8
1
–1
1
–1
20
–1.2
Min.
2.4
Typ
(2)
3.0
0.3
0.50
Max.
Units
V
V
V
V
µA
µA
µA
µA
µA
V
mA
µA
mV
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(4)
C
IN
C
OUT
Description
Input Capacitance
Output Capacitance
Test Conditions
V
IN
= 0V
V
OUT
= 0V
Typ
6
8
Max.
10
12
Units
pF
pF
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.
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PI74FCT2861T
10-Bit Non-Inverting Bus Transceiver
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
I
CCD
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
Outputs Open
OE = GND; LE = Vcc
One Input Toggling
50% Duty Cycle
V
CC
= Max.,
Outputs Open
f
CP
= 10 MH
Z
50% Duty Cycle
OE = GND; LE = Vcc
f
I
= 5 MH
Z
One Bit Toggling
V
CC
= Max.,
Outputs Open
f
CP
= 10 MH
Z
50% Duty Cycle
OE = GND; LE = Vcc
Eight Bits Toggling
f
I
= 2.5 MH
Z
50% Duty Cycle
Test Conditions
(1)
V
IN
= GND
or V
CC
V
IN
= 3.4V
(3)
V
IN
= V
CC
V
IN
= GND
Min.
Typ
(2)
0.1
0.5
0.15
Max.
500
2.0
0.25
Units
µA
mA
mA/
MHz
I
C
Total Power Supply
Current
(6)
V
IN
= V
CC
V
IN
= GND
V
IN
= 3.4V
V
IN
= GND
1.5
3.5
(5)
mA
1.8
4.5
(5)
V
IN
= V
CC
V
IN
= GND
V
IN
= 3.4V
V
IN
= GND
3.0
6.0
(5)
5.0
14.0
(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. V, +25°C ambient.
3. Per TTL driven input (V
IN
= 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. 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
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
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)
f
I
= Input Frequency
N
I
= Number of Inputs at f
I
All currents are in milliamps and all frequencies are in megahertz.
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PI74FCT2861T
10-Bit Non-Inverting Bus Transceiver
Non-inverting Switching Characteristics over Operating Range
2861AT
Com.
Min.
Max.
1.5
1.5
1.5
1.5
1.5
1.5
8.0
17.0
12.0
20.0
9.0
10.0
Parameters
t
PLH
t
PHL
Description
Propagation Delay
R
N
to T
N
or
T
N
to R
N
Output Enable Time
OET to T
N
or
OER to R
N
Output Disable Time
(3)
OET to T
N
or
OER to R
N
Conditions
(1)
C
L
= 50pF
R
L
= 500Ω
C
L
= 300pF
(3)
R
L
= 500Ω
C
L
= 50pF
R
L
= 500Ω
C
L
= 300pF
(3)
R
L
= 500Ω
C
L
= 50pF
R
L
= 500Ω
C
L
= 5pF
(3)
R
L
= 500Ω
2861BT
Com.
Min.
Max.
1.5
1.5
1.5
1.5
1.5
1.5
6.0
13.0
8.0
15.0
6.0
7.0
2861CT
Com.
Min.
Max.
1.5
1.5
1.5
1.5
1.5
1.5
5.5
11.5
6.8
13.0
5.0
6.0
Unit
ns
ns
ns
ns
ns
ns
t
PZH
t
PZL
t
PHZ
t
PLZ
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
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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PS8339
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