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PDF PI74FCT244ATL Data sheet ( Hoja de datos )
| Número de pieza | PI74FCT244ATL | |
| Descripción | Fast CMOS Octal Buffer/Line Drivers | |
| Fabricantes | Pericom Semiconductor Corporation | |
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PI74FCT244T/2244T
PI74FCT541T/2541T
Fast CMOS Octal Buffer/Line Drivers
Features
• PI74FCT244/541T and PI74FCT2244/2541T 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
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 209-mil wide plastic SSOP (H)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 150-mil wide plastic TQSOP (R)
– 20-pin 300-mil wide plastic SOIC (S)
• Device models available upon request
Description
Pericom Semiconductor’s PI74FCT244T/541T and P174FCT2244/
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.
The PI74FCT541 and 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.
All PI74FCT2XXX devices have a built-in 25Ω series resistor on
all outputs to reduce noise because of reflections, thus eliminating
the need for an external terminating resistor.
Block Diagrams
PI74FCT244/2244T
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
OEB*
OA0
DB0
OA1
DB1
OA2
DB2
OA3
DB3
*OEB for 244T,
PI74FCT541/2541T
OEA
OEB
D0 O0
D1 O1
D2 O2
D3 O3
D4 O4
D5 O5
D6 O6
D7 O7
1
PS2011C
09/22/04
1 page  
PI74FCT244T/2244T
PI74FCT541T/2541T
Octal Buffer/Line Drivers
PI74FCT244/2244T Switching Characteristics over Operating Range
Param-
eters
Description
Condi-
tions(1)
244T/2244T
Com.
Min Max
244AT/2244AT
Com.
Min Max
tPLH
tPHL
Propagation Delay
1.5 6.5 1.5 4.8
tPZH Output Enable Time
tPZL OEX to ON
CL = 50pF
1.5
8.0
1.5
6.2
tPHZ
tPLZ
Output Disable
Time(3)
OEX to ON
1.5 7.0 1.5 5.6
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.
244CT/2244CT
Com.
Min Max
1.5 4.1
1.5 5.8
1.5 5.2
244DT
Com.
Min Max
Units
1.5 3.6 ns
1.5 4.8 ns
1.5 4.0 ns
PI74FCT541/2541T Switching Characteristics over Operating Range
Parameters
Description
Conditions(1)
541T/2541T
Com.
541AT/
2541AT
Com.
Min Max Min Max
tPLH Propagation Delay
tPHL DN to ON
1.5 6.0 1.5 4.8
tPZH
tPZL
Output Enable Time
OEX to ON
CL = 50pF
RL = 500Ω
1.5 9.5 1.5 6.2
tPHZ
tPLZ
Output Disable
Time(3)
OEX to ON
1.5 6.5 1.5 5.6
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.
541CT/
2541CT
Com.
Min Max
1.5 4.1
1.5 5.8
1.5 5.2
541DT
Com.
Min Max
Units
1.5 3.8 ns
1.5 5.2 ns
1.5 5.2 ns
5
PS2011D
09/22/04
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet PI74FCT244ATL.PDF ] | |
Hoja de datos destacado
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