PERICOM PI74FCT623T

PI74FCT623T
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Fast CMOS Octal Bus Transceiver (3-State)
Product Features
Product Description
• PI74FCT623T is pin compatible with bipolar FAST™ Series at
a higher speed and lower power consumption
• TTL input and output levels
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 20-pin 173 mil wide plastic TSSOP (L)
– 20-pin 300 mil wide plastic DIP (P)
– 20-pin 150 mil wide plastic QSOP (Q)
– 20-pin 150 mil wide plastic TQSOP (R)
– 20-pin 300 mil wide plastic SOIC (S)
Pericom Semiconductor’s PI74FCT series of logic circuits are
produced in the Company’s advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades.
The PI74FCT623T is an 8-bit wide non-inverting octal transceiver
designed with 3-state bus-driving outputs in both the send and
receive directions. Designed for asynchronous two-way operation
between data buses, the control function allows for maximum
flexibility in timing.
Logic Block Diagram
GBA
Product Pin Configuration
GAB
GAB
A0
A1
A2
A3
A4
A5
A6
A7
GND
1
20
2
19
3 20-Pin 18
4 L, P, 17
5 Q, R, 16
6
15
S
7
14
8
13
9
12
10
11
Vcc
GBA
B0
B1
B2
B3
B4
B5
B6
B7
A0
B0
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
Product Pin Description
Pin Name
GBA, GAB
A0-A7
B0-B7
GND
VCC
Description
Enable Outputs
A Bus Inputs or 3-State Outputs
B Bus Inputs or 3-State Outputs
Ground
Power
Truth Table(1)
Inputs
GBA
L
H
H
L
1.
GAB
L
H
L
H
Outputs
B Data to A Bus
A Data to B Bus
Z
B Data to A Bus
A Data to B Bus
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance (OFF) State
1
PS2021B
06/20/01
PI74FCT623T
Octal
Bus
Transceiver
(3-State)
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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
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, TA = –40°C to +85°C, VCC = 5V ± 5%)
Test Conditions(1)
Parameters Description
Min.
Typ(2)
2.4
3.0
VOH
Output HIGH Voltage
VCC = Min., VIN = VIH or VIL
IOH = –15.0 mA
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 64 mA
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
IIH
Input HIGH Current
VCC = Max.
IIL
Input LOW Current
IOZH
High Impedance
IOZL
Output Current
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18 mA
IOS
Short Circuit Current
VCC = Max.(3), VOUT = GND
–60
–120
IOFF
Power Down Disable
VCC = GND, VOUT = 4.5V
—
—
VH
Input Hysteresis
0.3
Max.
Units
V
0.55
2.0
V
V
0.8
V
VIN = VCC
1
µA
VCC = Max.
VIN = GND
–1
µA
VCC = Max.
VOUT = 2.7V
1
µA
VOUT = 0.5V
–1
µA
–1.2
V
–0.7
mA
100
200
µA
mV
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
Test Conditions
Typ
Max.
Units
CIN
Input Capacitance
VIN = 0V
6
10
pF
COUT
Output Capacitance
VOUT = 0V
8
12
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.
2
PS2021B
06/20/01
PI74FCT623T
Octal
Bus
Transceiver
(3-State)
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Power Supply Characteristics
Test Conditions(1)
Parameters Description
Min.
Typ(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND
or Vcc
0.1
500
µA
∆ICC
Supply Current per
Input @ TTL HIGH
VCC = Max.,
VIN = 3.4V(3)
0.5
2.0
mA
ICCD
Supply Current per
Input per MHz(4)
VCC = Max., Outputs Open
GBA = GAB = GND,
One Input Toggling, 50% Duty Cycle
VIN = VCC
VIN = GND
0.15
0.25
mA/
MHz
IC
Total Power Supply
Current(6)
VCC = Max., Outputs Open
fCP = 10 MHZ, 50% Duty Cycle
GBA = GAB = GND, 50% Duty Cycle
One Bit toggling at fI = 5 MHZ
VCC = Max., Outputs Open
fCP = 10 MHZ, 50% Duty Cycle
GBA = GAB = GND, 50% Duty Cycle
Eight Bits toggling at fI = 2.5 MHZ
50% Duty Cycle
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
1.5
3.5(5)
mA
1.8
4.5(5)
3.0
6.0(5)
5.0
14.0(5)
Notes:
1. For conditions shown as Max. or Min., 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.
Switching Characteristics over Operating Range
Parameters
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPZH
tPZL
tPZH
(1)
623T
623AT
623CT
Com.
Com.
Com.
Description
Conditions
Min
Max
Min
Max
Min
Max
Units
Propagation Delay
AN to BN
Propagation Delay
BN to AN
Output Enable Time
GBA to AN
Output Disable Time(3)
GBA to AN
Output Enable Time
GAB to BN
Output Disable Time(3)
CL = 50 pF
RL = 500Ω
1.5
7.5
1.5
5.5
1.5
4.8
ns
1.5
7.5
1.5
5.5
1.5
4.8
ns
1.5
9.0
1.5
7.0
1.5
6.1
ns
1.5
8.0
1.5
6.5
1.5
5.6
ns
1.5
9.0
1.5
7.0
1.5
6.1
ns
1.5
8.0
1.5
6.5
1.5
5.6
ns
tPZL
GAB to BN
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.
3
PS2021B
06/20/01