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부품번호 | 54AC240 기능 |
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기능 | Octal Buffer/Line Driver | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 8 페이지수
www.DataSheet4U.com
August 1998
54AC240 • 54ACT240
Octal Buffer/Line Driver with TRI-STATE® Outputs
General Description
The ’AC/’ACT240 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.
Features
n ICC and IOZ reduced by 50%
n Inverting TRI-STATE outputs drive bus lines or buffer
memory address registers
n Outputs source/sink 24 mA
n ’ACT240 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC240: 5962-87550
— ’ACT240: 5962-87759
Logic Symbol
Connection Diagrams
IEEE/IEC
Pin Assignment
for DIP and Flatpak
Pin Names
OE1, OE2
I0– I7
O0– O7
DS100280-1
Description
TRI-STATE Output Enable Inputs
Inputs
Outputs
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100280
DS100280-2
Pin Assignment
for LCC
DS100280-3
www.national.com
DC Characteristics for ’AC Family Devices (Continued)
Symbol
Parameter
IOZ Maximum TRI-STATE
Leakage Current
54AC
VCC
TA =
(V) −55˚C to +125˚C
Guaranteed Limits
5.5 ±5.0
IOLD
IOHD
ICC
Minimum Dynamic
Output Current (Note 3)
Maximum Quiescent
Supply Current
5.5
5.5
5.5
50
−50
80.0
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C.
DC Characteristics for ’ACT Family Devices
Symbol
Parameter
VIH Minimum High Level
Input Voltage
VIL Maximum Low Level
Input Voltage
VOH Minimum High Level
Output Voltage
54ACT
VCC
TA =
(V) −55˚C to +125˚C
Guaranteed Limits
4.5 2.0
5.5 2.0
4.5 0.8
5.5 0.8
4.5 4.4
5.5 5.4
VOL Maximum Low Level
Output Voltage
4.5
5.5
4.5
5.5
3.70
4.70
0.1
0.1
IIN
IOZ
ICCT
IOLD
IOHD
ICC
Maximum Input
Leakage Current
Maximum TRI-STATE
Leakage Current
Maximum
ICC/Input
Minimum Dynamic
Output Current (Note 6)
Maximum Quiescent
Supply Current
4.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
Note 5: All outputs loaded; thresholds on input associated with output under test.
Note 6: Maximum test duration 2.0 ms, one output loaded at a time.
Note 7: ICC for 54ACT @ 25˚C is identical to 74ACT @ 25˚C.
0.50
0.50
±1.0
±5.0
1.6
50
−50
80.0
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4
Units
µA
mA
mA
µA
Units
V
V
V
V
V
V
µA
µA
mA
mA
mA
µA
Conditions
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
VOLD = 1.65V Max
VOHD = 3.85V Min
VIN = VCC
or GND
Conditions
VOUT = 0.1V
or VCC − 0.1V
VOUT = 0.1V
or VCC − 0.1V
IOUT = −50 µA
(Note 5)
VIN = VIL or VIH
IOH = −24 mA
IOH = −24 mA
IOUT = 50 µA
(Note 5)
VIN = VIL or VIH
IOL = 24 mA
IOL = 24 mA
VI = VCC, GND
VI = VIL, VIH
VO = VCC, GND
VI = VCC − 2.1V
VOLD = 1.65V Max
VOHD = 3.85V Min
VIN = VCC
or GND
4페이지 Physical Dimensions inches (millimeters) unless otherwise noted
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
20 Lead Ceramic Dual-In-Line Package (D)
NS Package Number J20A
7
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7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ 54AC240.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
54AC240 | Octal Buffer/Line Driver | National Semiconductor |
54AC240 | Octal Buffer/Line Driver with TRI-STATE Outputs | Texas Instruments |
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