Fairchild Semiconductor 74LCX241WMX, 74LCX241WM, 74LCX241SJX, 74LCX241SJ, 74LCX241MTCX Datasheet
...
August 1998
Revised April 1999
74LCX241
Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs
General Description
The LCX241 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver. The device is designed for low voltage (2.5V or 3.3V) VCC applications with capability of interfacing to a 5V signal environment.
The LCX241 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation.
Features
■5V tolerant inputs and outputs
■2.3V – 3.6V VCC specifications provided
■6.5 ns tPD max (VCC = 3.3V), 10 μA ICC max
■Power-down high impedance inputs and outputs
■Supports live insertion/withdrawal (Note 1)
■Implements patented noise/EMI reduction circuitry
■Latch-up performance exceeds 500 mA
■ESD performance:
Human Body Model > 2000V
Machine Model > 200V
Note 1: To ensure the high-impedance state during power up or down, OE should be tied to VCC and OE should be tied to GND through a resistor: the minimum value or the resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number |
Package Number |
Package Description |
|
|
|
74LCX241WM |
M20B |
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide |
|
|
|
74LCX241MSA |
M20D |
20-Lead Small Outline Package (SOP), EIAJ Type II, 5.3mm Wide |
|
|
|
74LCX241SJ |
MSA20 |
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm WIde |
|
|
|
74LCX241MTC |
MTC20 |
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide |
|
|
|
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram |
Pin Descriptions |
||||
|
|
|
|
||
|
|
Pin Names |
Description |
||
|
|
|
|
|
|
|
|
|
|
1, OE2 |
3-STATE Output Enable Inputs |
|
|
|
OE |
||
|
|
|
I0–I7 |
Inputs |
|
|
|
|
O0–O7 |
Outputs |
|
Outputs and Inputs Tolerant 5V with Driver Buffer/Line Octal Voltage Low 74LCX241
© 1999 Fairchild Semiconductor Corporation |
DS012639.prf |
www.fairchildsemi.com |
74LCX241
Logic Symbol
Truth Tables
|
|
|
Inputs |
Outputs |
|
|
|
|
|
|
|
OE1 |
|
In |
(Pins 12, 14, 16, 18) |
||
|
|
||||
|
L |
|
L |
L |
|
|
L |
|
H |
H |
|
|
H |
|
X |
Z |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Inputs |
Outputs |
|
|
|
|
|
|
|
OE2 |
|
In |
(Pins 3, 5, 7, 9) |
||
|
|
||||
|
|
|
|
|
|
|
H |
|
H |
H |
|
|
H |
|
L |
L |
|
|
L |
|
X |
Z |
|
|
|
|
|
|
|
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
www.fairchildsemi.com |
2 |
|
VI |
DC Input Voltage |
−0.5 to +7.0 |
|
|
|
|
|
|
V |
74LCX241 |
|
|
Absolute Maximum Ratings(Note 2) |
|
|
|
|
|
|
|
|
|||
|
Symbol |
Parameter |
|
Value |
|
|
Conditions |
|
|
Units |
|
|
|
VCC |
Supply Voltage |
|
−0.5 to +7.0 |
|
|
|
|
|
|
V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VO |
DC Output Voltage |
|
−0.5 to +7.0 |
|
Output in 3-STATE |
|
|
V |
|
||
|
|
|
|
−0.5 to VCC +0.5 |
Output in HIGH or LOW State (Note 3) |
|
||||||
|
|
|
|
|
|
|||||||
|
IIK |
DC Input Diode Current |
|
−50 |
|
VI< GND |
|
|
|
|
mA |
|
|
IOK |
DC Output Diode Current |
|
−50 |
|
VO< GND |
|
|
|
|
mA |
|
|
|
|
|
+50 |
|
VO< VCC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
IO |
DC Output Source/Sink Current |
|
±50 |
|
|
|
|
|
|
mA |
|
|
ICC |
DC Supply Current per Supply Pin |
|
±100 |
|
|
|
|
|
|
mA |
|
|
IGND |
DC Ground Current per Ground Pin |
|
±100 |
|
|
|
|
|
|
mA |
|
|
TSTG |
Storage Temperature |
|
−65 to +150 |
|
|
|
|
|
|
°C |
|
|
Recommended Operating Conditions (Note 4) |
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Symbol |
Parameter |
|
|
|
Min |
|
Max |
|
Units |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VCC |
Supply Voltage |
|
|
Operating |
2.0 |
|
3.6 |
|
V |
|
|
|
|
|
|
|
Data Retention |
1.5 |
|
3.6 |
|
|
||
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VI |
Input Voltage |
|
|
|
0 |
|
5.5 |
|
V |
|
|
|
VO |
Output Voltage |
HIGH or LOW State |
0 |
|
VCC |
|
V |
|
|||
|
|
|
|
|
|
3-STATE |
0 |
|
5.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|||
|
IOH/IOL |
Output Current |
VCC = 3.0V − 3.6V |
|
|
±24 |
|
|
|
|||
|
|
|
|
VCC = 2.7V − 3.0V |
|
|
±12 |
|
mA |
|
||
|
|
|
|
VCC = 2.3V − 2.7V |
|
|
±8 |
|
|
|
||
|
TA |
Free-Air Operating Temperature |
|
|
|
−40 |
|
85 |
|
°C |
|
|
|
t/ V |
Input Edge Rate, VIN = 0.8V−2.0V, VCC = 3.0V |
|
|
0 |
|
10 |
|
ns/V |
|
||
Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.
Note 3: IO Absolute Maximum Rating must be observed.
Note 4: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol |
Parameter |
Conditions |
VCC |
TA = −40°C to +85°C |
Units |
||
|
|
|
(V) |
Min |
Max |
|
|
|
|
|
|
|
|
|
|
VIH |
HIGH Level Input Voltage |
|
2.3 |
− 2.7 |
1.7 |
|
V |
|
|
|
2.7 |
− 3.6 |
2.0 |
|
|
|
|
|
|
|
|||
VIL |
LOW Level Input Voltage |
|
2.3 |
− 2.7 |
|
0.7 |
V |
|
|
|
2.7 |
− 3.6 |
|
0.8 |
|
|
|
|
|
|
|||
VOH |
HIGH Level Output Voltage |
IOH = −100μA |
2.3 |
− 3.6 |
VCC - 0.2 |
|
|
|
|
IOH = −8 mA |
2.3 |
1.8 |
|
|
|
|
|
IOH = −12 mA |
2.7 |
2.2 |
|
V |
|
|
|
IOH = −18 mA |
3.0 |
2.4 |
|
|
|
|
|
IOH = −24 mA |
3.0 |
2.2 |
|
|
|
VOL |
LOW Level Output Voltage |
IOL = 100 μA |
2.3 |
− 3.6 |
|
0.2 |
|
|
|
IOL = 8 mA |
2.3 |
|
0.6 |
|
|
|
|
IOL = 12 mA |
2.7 |
|
0.4 |
V |
|
|
|
IOL 16 mA |
3.0 |
|
0.4 |
|
|
|
|
IOL = 24 mA |
3.0 |
|
0.55 |
|
|
II |
Input Leakage Current |
0 ≤ VI ≤ 5.5V |
2.3 - 3.6 |
|
±5.0 |
μA |
|
IOZ |
3-STATE Output Leakage |
0 ≤ VO ≤ 5.5V |
2.3 - 3.6 |
|
±5.0 |
μA |
|
|
|
VI = VIH or VIL |
|
||||
|
|
|
|
|
|
|
|
IOFF |
Power-Off Leakage Current |
VI or VO = 5.5V |
|
0 |
|
10 |
μA |
3 |
www.fairchildsemi.com |
Loading...