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Fairchild Semiconductor Electronic Components Datasheet

74ABT240 Datasheet

Octal Buffer/Line Driver with 3-STATE Outputs

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March 1994
Revised November 1999
74ABT240
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The ABT240 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.
Features
s Output sink capability of 64 mA, source capability of
32 mA
s Guaranteed latchup protection
s High impedance glitch free bus loading during entire
power up and power down cycle
s Nondestructive hot insertion capability
Ordering Code:
Order Number Package Number
Package Description
74ABT240CSC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300Wide Body
74ABT240CSJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ABT240CMSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74ABT240CMTC
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.
Connection Diagram
Pin Descriptions
Pin Names
OE1, OE2
I0I7
O0O7
Truth Tables
Description
3-STATE Output
Enable Inputs
Inputs
Outputs
Inputs
OE1
L
L
H
In
L
H
X
Outputs
(Pins 12, 14, 16, 18)
H
L
Z
Inputs
OE2
L
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
In
L
H
X
Outputs
(Pins 3, 5, 7, 9)
H
L
Z
© 1999 Fairchild Semiconductor Corporation DS011664
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

74ABT240 Datasheet

Octal Buffer/Line Driver with 3-STATE Outputs

No Preview Available !

Absolute Maximum Ratings(Note 1)
Recommended Operating
Storage Temperature
65°C to +150°C Conditions
Junction Temperature under Bias
VCC Pin Potential to Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Any Output
in the Disabled or
55°C to +150°C
0.5V to +7.0V
0.5V to +7.0V
30 mA to +5.0 mA
Free Air Ambient Temperature
Supply Voltage
Minimum Input Edge Rate (V/t)
Data Input
Enable Input
40°C to +85°C
+4.5V to +5.5V
50 mV/ns
20 mV/ns
Power-Off State
0.5V to 5.5V
in the HIGH State
Current Applied to Output
0.5V to VCC
in LOW State (Max)
DC Latchup Source Current
twice the rated IOL (mA)
(Across Comm Operating Range)
Over Voltage Latchup (I/O)
150 mA
10V
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Units
VCC
Conditions
VIH Input HIGH Voltage
VIL Input LOW Voltage
VCD Input Clamp Diode Voltage
VOH Output HIGH Voltage
VOL Output LOW Voltage
IIH Input HIGH Current
IBVI Input HIGH Current Breakdown Test
IIL Input LOW Current
VID Input Leakage Test
2.0
2.5
2.0
4.75
V Recognized HIGH Signal
0.8 V
Recognized LOW Signal
1.2 V Min IIN = −18 mA
V Min IOH = −3 mA
V Min IOH = −32 mA
0.55 V Min IOL = 64 mA
1 µA Max VIN = 2.7V (Note 3)
1 VIN = VCC
7 µA Max VIN = 7.0V
1 µA Max VIN = 0.5V (Note 3)
1 VIN = 0.0V
V 0.0 IID = 1.9 µA
All Other Pins Grounded
IOZH
IOZL
IOS
ICEX
IZZ
ICCH
ICCL
ICCZ
ICCT
Output Leakage Current
Output Leakage Current
Output Short-Circuit Current
Output HIGH Leakage Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
100
Additional ICC/Input
Outputs Enabled
Outputs 3-STATE
Outputs 3-STATE
ICCD
Dynamic ICC
(Note 3)
No Load
Note 3: Guaranteed, but not tested.
Note 4: For 8 bits toggling, ICCD < 0.8 mA/MHz.
10
10
275
50
100
50
30
50
1.5
1.5
50
0.1
µA
µA
mA
µA
µA
µA
mA
µA
mA
mA
µA
mA/
MHz
0 5.5V VOUT = 2.7V; OEn = 2.0V
0 5.5V
Max
Max
0.0
Max
VOUT = 0.5V; OEn = 2.0V
VOUT = 0.0V
VOUT = VCC
VOUT = 5.5V; All Others GND
All Outputs HIGH
Max All Outputs LOW
Max
Max
OEn = VCC;
All Others at VCC or Ground
VI = VCC 2.1V
Enable Input VI = VCC 2.1V
Data Input VI = VCC 2.1V
All Others at VCC or Ground
Outputs Open
Max OEn = GND, (Note 4)
One Bit Toggling, 50% Duty Cycle
www.fairchildsemi.com
2


Part Number 74ABT240
Description Octal Buffer/Line Driver with 3-STATE Outputs
Maker Fairchild Semiconductor
Total Page 8 Pages
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