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PDF 74F244 Data sheet ( Hoja de datos )
| Número de pieza | 74F244 | |
| Descripción | Octal Buffers/Line Drivers with 3-STATE Outputs | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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74F240, 74F244
Octal Buffers/Line Drivers with 3-STATE Outputs
May 2007
tm
Features
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs sink 64mA (48mA mil)
■ 12mA source current
■ Input clamp diodes limit high-speed termination
effects
General Description
The 74F240 and 74F244 are octal buffers and line driv-
ers designed to be employed as memory and address
drivers, clock drivers and bus-oriented transmitters/
receivers which provide improved PC and board density.
Ordering Information
Order Code
74F240SC(1)
74F240SJ(1)
74F240PC
74F244SC(1)
74F244SJ(1)
74F244MSA(1)
74F244PC
Package
Number
Package Description
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Note:
1. Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering number.
Connection Diagrams
74F240
74F244
©1988 Fairchild Semiconductor Corporation
74F240, 74F244 Rev. 1.4
www.fairchildsemi.com
1 page  
AC Electrical Characteristics
Symbol
tPLH, tPHL
tPZH, tPZL
Parameter
Propagation Delay
Data to Output
(74F240)
Output Enable Time
(74F240)
tPHZ, tPLZ Output Disable Time
(74F240)
tPLH, tPHL
tPZH, tPZL
Propagation Delay,
Data to Output
(74F244)
Output Enable Time
(74F244)
tPHZ, tPLZ Output Disable Time
(74F244)
TA = +25°C,
VCC = +5.0V,
CL = 50pF
TA = –55°C to +125°C, TA = 0°C to +70°C,
VCC = 5.0V,
VCC = 5.0V,
CL = 50pF
CL = 50pF
Min. Typ. Max. Min.
Max.
Min. Max. Units
3.0 5.1 7.0
3.0
9.0 3.0 8.0 ns
2.0 3.5 4.7
2.0
6.0 2.0 5.7
2.0 3.5 4.7
4.0 6.9 9.0
2.0 4.0 5.3
2.0 6.0 8.0
2.5 4.0 5.2
2.5 4.0 5.2
2.0
4.0
2.0
2.0
2.0
2.0
6.5 2.0 5.7 ns
10.5 4.0 10.0
6.5 2.0 6.3
12.5 2.0 9.5
6.5 2.5 6.2 ns
7.0 2.5 6.5
2.0 4.3 5.7
2.0 5.4 7.0
2.0 4.5 6.0
2.0 4.5 6.0
2.0
2.0
2.0
2.0
7.0 2.0 6.7 ns
8.5 2.0 8.0
7.0 2.0 7.0
7.5 2.0 7.0
©1988 Fairchild Semiconductor Corporation
74F240, 74F244 Rev. 1.4
5
www.fairchildsemi.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet 74F244.PDF ] | |
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