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부품번호 | 54ACTQ240 기능 |
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기능 | Quiet Series Octal Buffer/Line Driver | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 8 페이지수
www.DataSheet4U.com
February 1999
54ACQ240 • 54ACTQ240
Quiet Series Octal Buffer/Line Driver with TRI-STATE®
Outputs
General Description
The ’ACQ/’ACTQ240 is an inverting 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 uti-
lizes NSC Quiet Series technology to guarantee quiet output
switching and improve dynamic threshold performance.
FACT Quiet Series™ features GTO™ output control and un-
dershoot corrector in addition to a split ground bus for supe-
rior performance.
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Improved latch-up immunity
n Inverting TRI-STATE outputs drive bus lines or buffer
memory address registers
n Outputs source/sink 24 mA
n Faster prop delays than the standard ’ACT240
n 4 kV minimum ESD immunity
n Standard Microcircuit Drawing (SMD)
’ACTQ240: 5962-92184
Features
n ICC and IOZ reduced by 50%
Logic Symbol
Connection Diagrams
IEEE/IEC
Pin Assignment
for DIP and Flatpak
Pin Names
OE1, OE2
I0– I7
O0– O7
DS100235-1
Description
TRI-STATE Output Enable Inputs
Inputs
Outputs
GTO™ is a trademark of National Semiconductor Corporation.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
FACT Quiet Series™ is a trademark of Fairchild Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS100235
DS100235-2
Pin Assignment
for LCC
DS100235-3
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DC Characteristics for ’ACQ Family Devices (Continued)
54ACQ
Symbol
Parameter
VCC
TA =
Units
(V) −55˚C to +125˚C
Conditions
Guaranteed Limits
IOLD
Minimum Dynamic
(Note 4)
5.5
50
mA VOLD = 1.65V Max
IOHD
ICC
Output Current
Maximum Quiescent
Supply Current
5.5
5.5
−50
80.0
mA VOHD = 3.85V Min
µA VIN = VCC
or GND (Note 5)
IOZ
VOLP
VOLV
Maximum TRI-STATE
Leakage Current
Quiet Output
Maximum Dynamic VOL
Quiet Output
Minimum Dynamic VOL
5.5
5.0
5.0
±5.0
1.5V
−1.2V
VI (OE) = VIL, VIH
µA VI = VCC, GND
VO = VCC, GND
V (Notes 6, 7)
V (Notes 6, 7)
Note 3: All outputs loaded; thresholds on input associated with output under test.
Note 4: Maximum test duration 2.0 ms, one output loaded at a time.
Note 5: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
ICC for 54ACQ @ 25˚C is identical to 74ACQ @ 25˚C.
Note 6: Plastic DIP package.
Note 7: Max number of outputs defined as (n). Data inputs are driven 0V to 5V. One output @ GND.
Note 8: Max number of data inputs (n) switching. (n −1) inputs switching 0V to 5V (’ACQ). Input-under-test switching: 5V to threshold (VILD), 0V to threshold (VIHD),
f = 1 MHz.
DC Characteristics for ’ACTQ Family Devices
Symbol
Parameter
VIH Minimum High Level
Input Voltage
VIL Maximum Low Level
Input Voltage
VOH Minimum High Level
Output Voltage
54ACTQ
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
4.5
5.5
IIN Maximum Input
Leakage Current
5.5
IOZ
Maximum TRI-STATE
5.5
Leakage Current
0.50
0.50
±1.0
±5.0
Units
Conditions
V VOUT = 0.1V
or VCC − 0.1V
V VOUT = 0.1V
or VCC − 0.1V
V IOUT = −50 µA
(Note 9)
VIN = VIL or VIH
V IOH = −24 mA
IOH = −24 mA
V IOUT = 50 µA
(Note 9)
VIN = VIL or VIH
V IOL = 24 mA
IOL = 24 mA
µA VI = VCC, GND
µA VI = VIL, VIH
VO = VCC, GND
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4
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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부품번호 | 상세설명 및 기능 | 제조사 |
54ACTQ240 | Quiet Series Octal Buffer/Line Driver | National Semiconductor |
54ACTQ240 | 54ACQ240 54ACTQ240 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs | Texas Instruments |
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