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74LVTH244MTC 데이터시트 PDF




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부품번호 74LVTH244MTC 기능
기능 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs
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74LVTH244MTC 데이터시트, 핀배열, 회로
July 1999
Revised August 1999
74LVT244 •74LVTH244
Low Voltage Octal Buffer/Line Driver
with 3-STATE Outputs
General Description
The LVT244 and LVTH244 are octal buffers and line drivers
designed to be employed as memory address drivers,
clock drivers and bus oriented transmitters or receivers
which provide improved PC board density.
The LVTH244 data inputs include bushold, eliminating the
need for external pull-up resistors to hold unused inputs.
These octal buffers and line drivers are designed for low-
voltage (3.3V) VCC applications, but with the capability to
provide a TTL interface to a 5V environment. The LVT244
and LVTH244 are fabricated with an advanced BiCMOS
technology to achieve high speed operation similar to 5V
ABT while maintaining low power dissipation.
Features
s Input and output interface capability to systems at
5V VCC
s Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs (74LVTH244),
also available without bushold feature (74LVT244)
s Live insertion/extraction permitted
s Power Up/Down high impedance provides glitch-free
bus loading
s Outputs source/sink 32 mA/+64 mA
s Functionally compatible with the 74 series 244
s Latch-up performance exceeds 500 mA
Ordering Code:
Order Number Package Number
Package Description
74LVT244WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74LVT244SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVT244MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LVT244MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LVTH244WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74LVTH244SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVTH244MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LVTH244MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
© 1999 Fairchild Semiconductor Corporation DS500154
www.fairchildsemi.com




74LVTH244MTC pdf, 반도체, 판매, 대치품
DC Electrical Characteristics
Symbol
Parameter
T A =−40°C to +85°C
VCC
(V)
Min
Typ Max Units
(Note 3)
Conditions
VIK Input Clamp Diode Voltage
VIH Input HIGH Voltage
VIL Input LOW Voltage
VOH Output HIGH Voltage
VOL Output LOW Voltage
II(HOLD)
(Note 4)
II(OD)
(Note 4)
Bushold Input Minimum Drive
Bushold Input Over-Drive
Current to Change State
2.7
2.7–3.6
2.7–3.6
2.7–3.6
2.7
3.0
2.7
2.7
3.0
3.0
3.0
3.0
3.0
2.0
VCC0.2
2.4
2.0
75
75
500
500
1.2
0.8
0.2
0.5
0.4
0.5
0.55
V II = −18 mA
V VO 0.1V or
VO VCC 0.1V
V IOH = −100 µA
V IOH = −8 mA
V IOH = −32 mA
V IOL = 100 µA
V IOL = 24 mA
V IOL = 16 mA
V IOL = 32 mA
V IOL = 64 mA
µA VI = 0.8V
µA VI = 2.0V
µA (Note 5)
µA (Note 6)
II
IOFF
IPU/PD
IOZL
IOZH
IOZH+
ICCH
ICCL
ICCZ
ICCZ+
Input Current
Control Pins
Data Pins
3.6
3.6
3.6
Power Off Leakage Current
Power up/down 3-STATE
Output Current
3-STATE Output Leakage Current
3-STATE Output Leakage Current
3-STATE Output Leakage Current
Power Supply Current
Power Supply Current
Power Supply Current
Power Supply Current
0
0–1.5V
3.6
3.6
3.6
3.6
3.6
3.6
3.6
10
±1
5
1
±100
±100
5
5
10
0.19
5
0.19
0.19
µA VI = 5.5V
µA VI = 0V or VCC
µA VI = 0V
µA VI = VCC
µA 0V VI or VO 5.5V
µA VO = 0.5V to 3.0V
VI = GND or VCC
µA VO = 0.5V
µA VO = 3.0V
µA VCC < VO 5.5V
mA Outputs HIGH
mA Outputs LOW
mA Outputs Disabled
mA VCC VO 5.5V,
Outputs Disabled
ICC
Increase in Power Supply Current
(Note 7)
Note 3: All typical values are at VCC = 3.3V, TA = 25°C.
3.6
0.2 mA One Input at VCC 0.6V
Other Inputs at VCC or GND
Note 4: Applies to bushold versions only (74LVTH244).
Note 5: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 6: An external driver must sink at least the specified current to switch from HIGH-to-LOW.
Note 7: This is the increase in supply current for each input that is at the specified voltage level rather than VCC or GND.
Dynamic Switching Characteristics (Note 8)
Symbol
Parameter
VCC TA = 25°C
(V) Min Typ Max
VOLP
Quiet Output Maximum Dynamic VOL
3.3
VOLV
Quiet Output Minimum Dynamic VOL
3.3
Note 8: Characterized in SOIC package. Guaranteed parameter, but not tested.
0.8
0.8
Note 9: Max number of outputs defined as (n). n1 data inputs are driven 0V to 3V. Output under test held LOW.
Units
V
V
Conditions
CL = 50 pF, RL = 500
(Note 9)
(Note 9)
www.fairchildsemi.com
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74LVTH244MTC 전자부품, 판매, 대치품
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
7 www.fairchildsemi.com

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74LVTH244MTC

Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs

Fairchild Semiconductor
Fairchild Semiconductor

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