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74F244SJX

P1-P3P4-P6P7-P8
© 2004 Fairchild Semiconductor Corporation DS009501 www.fairchildsemi.com
April 1988
Revised January 2004
74F240 • 74F241 • 74F244 Octal Buffers/Line Drivers with 3-STATE Outputs
74F240 • 74F241 • 74F244
Octal Buffers/Line Drivers with 3-STATE Outputs
General Description
The 74F240, 74F241 and 74F244 are octal buffers and line
drivers designed to be employed as memory and address
drivers, clock drivers and bus-oriented transmitters/receiv-
ers which provide improved PC and board density.
Features
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs sink 64 mA (48 mA mil)
■ 12 mA source current
■ Input clamp diodes limit high-speed termination effects
Ordering Code:
Note 1: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
74F240 74F241
74F244
Order Code
Package
Package Description
Number
74F240SC (Note 1) M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74F240SJ (Note 1) M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F240PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74F241SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74F241PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
74F244SC (Note 1) M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74F244SJ (Note 1) M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F244MSA (Note 1) MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74F244PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
www.fairchildsemi.com 2
74F240 • 74F241 • 74F244
Logic Symbols
IEEE/IEC
74F240
IEEE/IEC
74F241
IEEE/IEC
74F244
Unit Loading/Fan Out
Note 2: Worst-case 74F240 enabled; 74F241, 74F244 disabled
Truth Tables
74F240
74F241
74F244
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) 1.0/1.667 20 µA/−1 mA
OE
2
3-STATE Output Enable Input (Active HIGH) 1.0/1.667 20 µA/−1 mA
I
0
–I
7
Inputs (74F240) 1.0/1.667 (Note 2) 20 µA/−1 mA
I
0
–I
7
Inputs (74F241, 74F244) 1.0/2.667 (Note 2) 20 µA/−1.6 mA
O
0
–O
7
, O
0
–O
7
Outputs 600/106.6 (80) −12 mA/64 mA (48 mA)
OE
1
D
1n
O
1n
OE
2
D
2n
O
2n
HXZHXZ
LHLLHL
LLHLLH
OE
1
D
1n
O
1n
OE
2
D
2n
O
2n
HXZLXZ
LHHHHH
LLLHLL
OE
1
D
1n
O
1n
OE
2
D
2n
O
2n
HXZHXZ
LHHLHH
LLLLLL
3 www.fairchildsemi.com
74F240 • 74F241 • 74F244
Absolute Maximum Ratings(Note 3) Recommended Operating
Conditions
Note 3: 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 4: 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 4)
−0.5V to +7.0V
Input Current (Note 4)
−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)
ESD Last Passing Voltage (Min) 4000V
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 −1.0
mA Max
V
IN
= 0.5V (OE
1
, OE
2
, OE
2
, D
n
74F240))
−1.6 V
IN
= 0.5V (D
n
(74F241, 74F244))
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 (74F240) 19 29 mA Max V
O
= HIGH
I
CCL
Power Supply Current (74F240) 50 75 mA Max V
O
= LOW
I
CCZ
Power Supply Current (74F240) 42 63 mA Max V
O
= HIGH Z
I
CCH
Power Supply Current
40 60 mA Max V
O
= HIGH
(74F241, 74F244)
I
CCL
Power Supply Current
60 90 mA Max V
O
= LOW
(74F241, 74F244)
I
CCZ
Power Supply Current
60 90 mA Max V
O
= HIGH Z
(74F241, 74F244)
P1-P3P4-P6P7-P8

74F244SJX

Mfr. #:
Buy 74F244SJX
Manufacturer:
ON Semiconductor
Description:
IC BUFFER NON-INVERT 5.5V 20SOP
Lifecycle:
New from this manufacturer.
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