PI74FCT240DTQ [ETC]
Dual 4-Bit Inverting Buffer/Driver ; 双4位缓冲器/驱动器\n
| 型号： | PI74FCT240DTQ |
| 厂家： | 
ETC |
| 描述： | Dual 4-Bit Inverting Buffer/Driver
|
| 文件： | 总6页 (文件大小：236K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74FCT240T/241T/
244T/540T/541T (25 ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
Fast CMOS Octal
Buffer/Line Drivers
ProductFeatures
ProductDescription
Pericom Semiconductors PI74FCT series of logic circuits are
produced in the Companys advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades. All
PI74FCT2XXX devices have a built-in 25 ohm series resistor on
all outputs to reduce noise because of reflections, thus eliminating
the need for an external terminating resistor.
PI74FCT240/241/244/540/541TandPI74FCT2240/2241/2244/
2541T are pin compatible with bipolar FAST Series at a
higher speed and lower power consumption
25Ω series resistor on all outputs (FCT2XXX only)
TTL input and output levels
Low ground bounce outputs
Extremelylowstaticpower
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
The PI74FCT240T/241T/244T/540T/541T and P174FCT2240T/
2241T/2244/2541T are 8-bit wide driver circuits, designed to be
used in applications requiring high-speed and high-output drive.
Ideal applications would include bus drivers, memory drivers,
address drivers, and system clock drivers.
Packagesavailable:
20-pin173milwideplasticTSSOP(L)
20-pin209milwideplasticSSOP(H)
20-pin300milwideplasticDIP(P)
20-pin150milwideplasticQSOP(Q)
20-pin150milwideplasticTQSOP(R)
20-pin300milwideplasticSOIC(S)
Device models available upon request
The PI74FCT540T and PI74FCT541/2541T provide similar driver
capabilities, but have their pins physically grouped by function.
All inputs are located on one side of the package, while outputs are
on the opposite side, allowing for a much simpler and denser board
layout.
Logic Block Diagrams
PI74FCT240/2240T
PI74FCT241/2241T
PI74FCT244/2244T
PI74FCT540T
PI74FCT541/2541T
OE
A
OE
B
241 Only
OEA
OEA
OEB
OE *
B
D
D
D
0
1
2
O
0
1
2
DA
0
0
OA
0
DA
OB
0
0
OA
0
O
O
OB
DB
0
1
DB
OA
0
1
OA
DA
1
1
DA
OB
1
1
D
3
4
O
O
3
4
OB
DB
1
2
DB
OA
1
2
D
OA
DA
2
2
DA
OB
2
2
OB
D
5
6
O
O
5
6
DB
2
3
DB
OA
2
3
D
OA
DA
3
3
DA
OB
3
3
OB
D7
O
7
DB
3
DB
3
*Logic diagram shown for 540T.
541/2541T is the non-inverting option.
*OEB
for 241T, *OEB for 244T,
PS2011B
12/11/00
1
PI74FCT240T/241T/244T/540T/541T(25ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
OctalBuffer/LineDrivers
Product Pin Description
Truth Table
Inputs(1)
Outputs(1)
PinName
OEA,OEB
OEB(1)
Dxx
Description
(2)
OEA
L
OEB OEB
D
L
240 241 244 540 541
3-State Output Enable Inputs (Active LOW)
L
L
H
H
H
L
H
L
Z
L
H
Z
L
H
Z
H
L
Z
L
H
Z
3-State Output Enable Input (Active HIGH)
L
H
X
Inputs
H
Oxx
Outputs
Ground
Power
GND
Note:
1. H = High Voltage Level, X = Don't Care, L = Low
Voltage Level, Z = High Impedance
2. OEB for 241 only.
VCC
PI74FCT240/2240T Product Pin Configuration
OE
A
Vcc
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DA
OB
DA
OB
DA
OB
DA
OB
0
0
1
1
2
2
3
3
OE
OA
B
20-Pin
H20
L20
0
DB
OA
DB
OA
DB
OA
DB
0
1
P20
1
Q20
R20
S20
2
2
3
GND
3
PI74FCT241/2241/244/2244T Product Pin Configuration
OE
A
Vcc
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DA
OB
DA
OB
DA
OB
DA
OB
0
0
1
1
2
2
3
3
OEB
OA0
20-Pin
H20
L20
DB
OA
DB
OA
DB
OA
DB
0
1
1
P20
2
Q20
R20
S20
2
3
GND
3
*OEB for 241T, OEB for 244T
PI74FCT540/541/2541T Product Pin Configuration
OE
A
Vcc
OE
1
2
3
4
5
6
7
8
9
10
20
19
18
17
D
D
D
D
D
D
D
D
0
1
2
3
4
5
6
7
B
20-Pin
H20
O
O
O
O
O
0
2
2
3
4
*
*
*
*
*
L20 16
15
P20
Q20
R20
S20
14
O5*
13
O
O
6
*
*
12
GND
7
11
*Ox for 540T, Ox for 541T
PS2011B
12/11/00
2
PI74FCT240T/241T/244T/540T/541T(25ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
OctalBuffer/LineDrivers
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
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 ............................................................................... 120mA
Power Dissipation ................................................................................... 0.5W
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.
DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 5.0V ± 5%)
Parameters Description
Test Conditions(1)
Min. Typ(2) Max. Units
VOH
VOL
VOL
VIH
VIL
IIH
Output HIGH Voltage VCC = Min., VIN = VIH or VIL
Output LOW Current VCC = Min., VIN = VIH or VIL
Output LOW Current VCC = Min., VIN = VIH or VIL
IOH =15.0mA
2.4
3.0
V
V
IOL =64mA
0.3 0.55
0.3 0.50
IOL =12mA(25ΩSeries)
V
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High Impedance
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
VCC = Max.
2.0
V
0.8
V
VIN =VCC
1
µA
µA
µA
µA
V
IIL
VCC = Max.
VIN =GND
VOUT =2.7V
VOUT =0.5V
1
IOZH
IOZL
VIK
IOFF
IOS
VCC =MAX.
1
1
Output Current
Clamp Diode Voltage VCC = Min., IIN = 18mA
0.7 1.2
Power Down Disable VCC =GND,VOUT =4.5V
100
µA
mA
mV
Short Circuit Current VCC =Max.(3),VOUT =GND
60 120
200
VH
Input Hysteresis
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
TestConditions
VIN =0V
Typ
6
Max.
10
Units
pF
CIN
Input Capacitance
Output Capacitance
COUT
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.
PS2011B
12/11/00
3
PI74FCT240T/241T/244T/540T/541T(25ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
OctalBuffer/LineDrivers
Power Supply Characteristics
Parameters Description
TestConditions(1)
Min. Typ(2) Max. Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VCC = Max.
VIN =GNDorVCC
0.1
500
µA
∆ICC
ICCD
Supply Current per
Input @ TTL HIGH
VIN =3.4V(3)
0.5
2.5
mA
Supply Current per
Input per MHz(4)
VCC = Max.,
Outputs Open
VIN =VCC
VIN =GND
0.15
0.25
mA/
MHz
OEA =OEB =GNDor
OEA =GND,OEB =VCC
One Bit Toggling
50% Duty Cycle
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
VIN =VCC
VIN =GND
1.5
3.5(5)
mA
fI = 10 MHZ
50% Duty Cycle
OEA =OEB =GNDor
OEA =GND,OEB =VCC
One Bit Toggling
VIN =3.4V
VIN=GND
1.8
3.0
4.5(5)
6.0(5)
VCC = Max.,
VIN =VCC
Outputs Open
VIN =GND
fI = 2.5 MHZ
50% Duty Cycle
OEA =OEB =GNDor
OEA =GND,OEB =VCC
Eight Bits Toggling
VIN =3.4V
VIN=GND
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 = 5.0V, +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.
PS2011B
12/11/00
4
PI74FCT240T/241T/244T/540T/541T(25ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
OctalBuffer/LineDrivers
PI74FCT240/2240T Switching Characteristics over Operating Range
240T/2240T 240AT/2240AT 240CT/2240CT
Com. Com. Com.
240DT
Com.
Parameters Description
Conditions(1)
Min
Max
Min
Max
Min
Max
Min
Max Units
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
DN toON
Output Enable Time
OEX toON
Output Disable Time(3)
OEX toON
CL = 50pF
RL = 500Ω
1.5
1.5
1.5
8.0
1.5
1.5
1.5
4.8
1.5
1.5
1.5
4.3
1.5
1.5
1.5
3.6
4.8
4.0
ns
ns
ns
10.0
9.5
6.2
5.6
5.8
5.2
PI74FCT241/2241T Switching Characteristics over Operating Range
241T/2241T 241AT/2241AT 241CT/2241CT
Com. Com. Com.
241DT
Com.
Parameters Description
Conditions(1)
Min
Max
Min
Max
Min
Max
Min
Max Units
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
DN toON
Output Enable Time
OEA/OEB toON
Output Disable Time(3)
OEA/OEB toON
CL = 50pF
RL = 500Ω
1.5
1.5
1.5
6.5
1.5
1.5
1.5
4.8
1.5
1.5
1.5
4.1
1.5
3.6
4.8
4.0
ns
ns
ns
8.0
7.0
6.2
5.6
5.8
5.2
1.5
1.5
PI74FCT244/2244T Switching Characteristics over Operating Range
244T/2244T 244AT/2244AT 244CT/2244CT
Com. Com. Com.
244DT
Com.
Parameters Description
Units
Conditions(1)
Min
Max
Min
Max
Min
Max
Min
Max
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
DN toON
CL = 50pF
RL = 500Ω
1.5
1.5
1.5
6.5
8.0
7.0
1.5
1.5
1.5
4.8
6.2
5.6
1.5
1.5
1.5
4.1
5.8
5.2
1.5
1.5
1.5
3.6
4.8
4.0
ns
ns
ns
Output Enable Time
OEX toON
Output Disable Time(3)
OEX toON
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.
PS2011B
12/11/00
5
PI74FCT240T/241T/244T/540T/541T(25ohmSeries)
PI74FCT2240T/2241T/2244T/2541T
OctalBuffer/LineDrivers
PI74FCT540T Switching Characteristics over Operating Range
540T
Com.
540AT
Com.
540CT
Com.
540DT
Com.
Parameters Description
Conditions(1)
Min
Max
Min
Max
Min
Max
Min Max Units
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
DN toON
CL = 50pF
RL = 500Ω
1.5
1.5
1.5
5.5
1.5
1.5
1.5
4.8
1.5
1.5
1.5
4.3
1.5
1.5
1.5
3.8
5.2
5.2
ns
ns
ns
Output Enable Time
OEX toON
10.0
6.0
6.2
5.6
5.8
5.2
Output Disable Time(3)
OEX toON
PI74FCT541/2541T Switching Characteristics over Operating Range
541T/2541T 541AT/2541AT 541CT/2541CT
Com. Com. Com.
541DT
Com.
Min Max Units
Parameters Description
Conditions(1)
Min
Max
Min
Max
Min
Max
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
DNtoON
CL = 50pF
RL = 500Ω
1.5
1.5
1.5
6.0
1.5
1.5
1.5
4.8
1.5
1.5
1.5
4.1
1.5
1.5
1.5
3.8
5.2
5.2
ns
ns
ns
Output Enable Time
OEXtoON
9.5
6.5
6.2
5.6
5.8
5.2
Output Disable Time(3)
OEXtoON
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
PS2011B
12/11/00
6
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