74F540PC

© 2000 Fairchild Semiconductor Corporation DS009553 www.fairchildsemi.com
April 1988
Revised October 2000
74F540 • 74F541 Octal Buffer/Line Driver with 3-STATE Outputs
74F540 74F541
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The 74F540 and 74F541 are similar in function to the
74F240 and 74F244 respectively, except that the inputs
and outputs are on opposite sides of the package (see
Connection Diagrams). This pinout arrangement makes
these devices especially useful as output ports for micro-
processors, allowing ease of layout and greater PC board
density.
Features
3-STATE outputs drive bus lines
Inputs and outputs opposite side of package, allowing
easier interface to microprocessors
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
74F540
IEEE/IEC
74F541
Connection Diagrams
74F540
74F541
Order Number Package Number Package Description
74F540SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F540SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F540PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
74F541SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F541SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F541PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
www.fairchildsemi.com 2
74F540 74F541
Unit Loading/Fan Out
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Pin Names Description
U.L.
Input I
IH
/I
IL
HIGH/LOW
Output I
OH
/I
OL
OE
1
, OE
2
3-STATE Output Enable Input (Active LOW) 1.0/1.0 20 µA/0.6 mA
I
n
Inputs 1.0/1.0 20 µA/0.6 mA
O
n
, O
n
Outputs 600/106.6 (80) 12 mA/64 mA (48 mA)
Inputs Outputs
OE
1
OE
2
I 74F540 74F541
LLHLH
HXXZZ
XHXZZ
LLLHL
3 www.fairchildsemi.com
74F540 74F541
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
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
Storage Temperature 65°C to +150°C
Ambient Temperature under Bias
55°C to +125°C
Junction Temperature under Bias
55°C to +150°C
V
CC
Pin Potential to Ground Pin 0.5V to +7.0V
Input Voltage (Note 2)
0.5V to +7.0V
Input Current (Note 2)
30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output
0.5V to V
CC
3-STATE Output 0.5V to +5.5V
Current Applied to Output
in LOW State (Max) twice the rated I
OL
(mA)
Free Air Ambient Temperature 0
°C to +70°C
Supply Voltage
+4.5V to +5.5V
Symbol Parameter Min Typ Max Units
V
CC
Conditions
V
IH
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage 1.2 V Min I
IN
= 18 mA
V
OH
Output HIGH 10% V
CC
2.4
VMin
I
OH
= 3 mA
Voltage 10% V
CC
2.0 I
OH
= 15 mA
5% V
CC
2.7 I
OH
= 3 mA
V
OL
Output LOW Voltage 10% V
CC
0.55 V Min I
OL
= 64 mA
I
IH
Input HIGH
5.0 µAMaxV
IN
= 2.7V
Current
I
BVI
Input HIGH Current
7.0 µAMaxV
IN
= 7.0V
Breakdown Test
I
CEX
Output HIGH
50 µAMaxV
OUT
= V
CC
Leakage Current
V
ID
Input Leakage
4.75 V 0.0
I
ID
= 1.9 µA
Test All Other Pins Grounded
I
OD
Output Leakage
3.75 µA0.0
V
IOD
= 150 mV
Circuit Current All Other Pins Grounded
I
IL
Input LOW Current 0.6 mA Max V
IN
= 0.5V
I
OZH
Output Leakage Current 50 µAMaxV
OUT
= 2.7V
I
OZL
Output Leakage Current 50 µAMaxV
OUT
= 0.5V
I
OS
Output Short-Circuit Current 100 225 mA Max V
OUT
= 0V
I
ZZ
Bus Drainage Test 500 µA0.0VV
OUT
= 5.25V
I
CCH
Power Supply Current (74F540) 11 20 mA Max V
O
= HIGH
I
CCL
Power Supply Current (74F540) 53 75 mA Max V
O
= LOW
I
CCZ
Power Supply Current (74F540) 31 45 mA Max V
O
= HIGH Z
I
CCH
Power Supply Current (74F541) 26 35 mA Max V
O
= HIGH
I
CCL
Power Supply Current (74F541) 55 75 mA Max V
O
= LOW
I
CCZ
Power Supply Current (74F541) 31 55 mA Max V
O
= HIGH Z

74F540PC

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
IC BUF NON-INVERT 5.5V 20DIP
Lifecycle:
New from this manufacturer.
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