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PDF 74ACTQ244 Data sheet ( Hoja de datos )
| Número de pieza | 74ACTQ244 | |
| Descripción | Octal Buffer/Line Driver | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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March 2007
74ACQ244, 74ACTQ244
Quiet Series™ Octal Buffer/Line Driver with 3-STATE
tm
Outputs
Features
■ ICC and IOZ reduced by 50%
■ Guaranteed simultaneous switching noise level and
dynamic threshold performance
■ Guaranteed pin-to-pin skew AC performance
■ Improved latch-up immunity
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs source/sink 24mA
■ Faster prop delays than the standard AC/ACT244
General Description
The ACQ/ACTQ244 is an octal buffer and line driver
designed to be employed as a memory address driver,
clock driver and bus oriented transmitter or receiver
which provides improved PC board density. The ACQ/
ACTQ utilizes Fairchild Quiet Series™ technology to
guarantee quiet output switching and improved dynamic
threshold performance. FACT Quiet Series™ features
GTO™ output control and undershoot corrector in addi-
tion to a split ground bus for superior performance.
Ordering Information
Package
Order Number Number
Package Description
74ACQ244SC
74ACQ244SJ
74ACTQ244SC
M20B
M20D
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
Body
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
Body
74ACTQ244SJ
74ACTQ244QSC
74ACTQ244MSA
M20D
MQA20
MSA20
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Connection Diagram
Pin Description
Pin Names
Description
OE1, OE2
I0–I 7
O0–O 7
3-STATE Output Enable Inputs
Inputs
Outputs
FACT™, Quiet Series™, FACT Quiet Series™, and GTO™ are trademarks of Fairchild Semiconductor Corporation.
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
www.fairchildsemi.com
1 page  
DC Electrical Characteristics for ACTQ
Symbol
Parameter
VIH Minimum HIGH Level
Input Voltage
VIL Maximum LOW Level
Input Voltage
VOH Minimum HIGH Level
Output Voltage
VOL Maximum LOW Level
Output Voltage
IIN(3)
IOZ
ICCT
IOLD
IOHD
ICC(3)
VOLP
VOLV
VIHD
VILD
Maximum Input
Leakage Current
Maximum 3-STATE
Leakage Current
Maximum ICC/Input
Minimum Dynamic
Output Current(7)
Maximum Quiescent
Supply Current
Quiet Output Maximum
Dynamic VOL
Quiet Output Minimum
Dynamic VOL
Minimum HIGH Level
Dynamic Input Voltage
Maximum LOW Level
Dynamic Input Voltage
VCC (V)
4.5
5.5
Conditions
VOUT = 0.1V or
VCC – 0.1V
4.5 VOUT = 0.1V or
5.5 VCC – 0.1V
4.5 IOUT = –50µA
5.5
VIN = VIL or VIH:
4.5 IOH = –24mA
5.5 IOH = –24mA(6)
4.5 IOUT = 50µA
5.5
VIN = VIL or VIH:
4.5 IOL = 24mA
5.5 IOL = 24mA(6)
5.5 VI = VCC, GND
TA = +25°C TA = –40°C to +85°C
Typ.
Guaranteed Limits
Units
1.5 2.0
2.0
V
1.5 2.0
2.0
1.5 0.8
0.8
V
1.5 0.8
0.8
4.49 4.4
4.4
V
5.49 5.4
5.4
0.001
0.001
3.86
4.86
0.1
0.1
3.76
4.76
0.1
0.1
V
0.36
0.36
±0.1
0.44
0.44
±1.0
µA
5.5 VI = VIL, VIH;
VO = VCC, GND
±0.25
5.5 VI = VCC – 2.1V
0.6
5.5 VOLD = 1.65V Max.
5.5 VOHD = 3.85V Min.
5.5 VIN = VCC or GND
4.0
5.0 Figures 1 & 2(8)
1.1 1.5
±2.5
1.5
75
–75
40.0
µA
mA
mA
mA
µA
V
5.0 Figures 1 & 2(8)
–0.6 –1.2
V
5.0 (9)
1.9 2.2
V
5.0 (9)
1.2 0.8
V
Notes:
6. All outputs loaded thresholds on input associated with output under test.
7. Maximum test duration 2.0ms, one output loaded at a time.
8. Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND.
9. Max number of Data Inputs (n) switching. (n–1) Inputs switching 0V to 3V (ACTQ). Input-under-test switching:
3V to threshold (VILD), 0V to threshold (VIHD), f = 1 MHz.
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
5
www.fairchildsemi.com
5 Page 
Physical Dimensions (Continued)
Dimensions are in millimeters unless otherwise noted.
Figure 6. 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
Package Number MSA20
©1989 Fairchild Semiconductor Corporation
74ACQ244, 74ACTQ244 Rev. 1.3
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 74ACTQ244.PDF ] | |
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