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74FR244SJ

P1-P3P4-P6
© 2001 Fairchild Semiconductor Corporation DS010900 www.fairchildsemi.com
December 1990
Revised May 2001
74FR244 Octal Buffer/Line Driver with 3-STATE Outputs
74FR244
Octal Buffer/Line Driver with 3-STATE Outputs
General Description
The 74FR244 is a non-inverting octal buffer and line driver
designed to be employed as memory and address driver,
clock driver and bus-oriented transmitter/receiver.
Features
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs sink 64 mA and source 15 mA
■ Guaranteed pin-to-pin skew
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram Pin Descriptions
Truth Tables
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Order Number Package Number Package Description
74FR244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74FR244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74FR244PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names Description
OE
1
,–OE
2
Output Enable Input (Active-LOW)
I
0
–I
7
Inputs
O
0
–O
7
Outputs
Inputs Outputs
OE
1
I
n
(Pins 12, 14, 16, 18)
LL L
LH H
HX Z
Inputs Outputs
OE
2
I
n
(Pins 3, 5, 7, 9)
LL L
LH H
HX Z
www.fairchildsemi.com 2
74FR244
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)
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 HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized LOW Signal
V
CD
Input Clamp Diode Voltage −1.2 V Min I
IN
= −18 mA
V
OH
Output HIGH Voltage 2.4 V Min I
OH
= −3 mA
2.0 V Min I
OH
= −15 mA
V
OL
Output LOW Voltage 0.55 V Min I
OL
= 64 mA
I
IH
Input HIGH Current 5 µAMaxV
IN
= 2.7V
I
BVI
Input HIGH Current Breakdown Test 7 µAMaxV
IN
= 7.0V
I
IL
Input LOW Current −150 µAMaxV
IN
= 0.5V
V
ID
Input Leakage Test 4.75 V 0.0 I
ID
= 1.9 µA,
All Other Pins Grounded
I
OD
Output Circuit Leakage Current 3.75 µA0.0V
IOD
= 150 mV,
All Other Pins Grounded
I
OZH
Output Leakage Current 20 µAMaxV
OUT
= 2.7V
I
OZL
Output Leakage Current −20 µAMaxV
OUT
= 0.5V
I
OS
Output Short-Circuit Current −100 −225 mA Max V
OUT
= 0.0V
I
CEX
Output HIGH Leakage Current 50 µAMaxV
OUT
= V
CC
I
ZZ
Bus Drainage Test 100 µA0.0V
OUT
= 5.25V
I
CCH
Power Supply Current 30 50 mA Max All Outputs HIGH
I
CCL
Power Supply Current 55 75 mA Max All Outputs LOW
I
CCZ
Power Supply Current 35 50 mA Max Outputs 3-STATED
C
IN
Input Capacitance 8.0 pF 5.0
3 www.fairchildsemi.com
74FR244
AC Electrical Characteristics
Extended AC Characteristics
Note 3: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase,
i.e., all LOW-to-HIGH, HIGH-to-LOW, 3-STATE-to-HIGH, etc.
Note 4: These specifications guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load
capacitors in the standard AC load. This specification pertains to single output switching only.
Note 5: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same device. The specifi-
cation applies to any outputs switching HIGH-to-LOW, (t
OSHL
), LOW-to-HIGH, (t
OSLH
), or HIGH-to-LOW and/or LOW-to-HIGH, (t
OST
). Specification guaran-
teed with all outputs switching in phase.
Symbol Parameter
T
A
= +25°CT
A
= 0°C to +70°C
Units
V
CC
= +5.0V V
CC
= +5.0V
C
L
= 50 pF C
L
= 50 pF
Min Typ Max Min Max
t
PLH
Propagation Delay 1.0 2.6 3.9 1.0 3.9
ns
t
PHL
1.01.83.91.03.9
t
PZH
Output Enable Time 2.5 4.8 6.6 2.5 6.6
ns
t
PZL
2.53.96.62.56.6
t
PHZ
Output Disable Time 1.6 3.7 6.4 1.6 6.4
ns
t
PLZ
1.63.66.41.66.4
Symbol Parameter
T
A
= 0°C to +70°CT
A
= 0°C to +70°C
Units
V
CC
= +5.0V V
CC
= +5.0V
C
L
= 50 pF C
L
= 250 pF
Eight Outputs Switching (Note 4)
(Note 3)
Min Max Min Max
t
PLH
Propagation Delay 1.0 5.0 2.3 7.3
ns
t
PHL
1.0 5.0 2.3 7.3
t
PZH
Output Enable Time 2.5 7.7
ns
t
PZL
2.5 7.7
t
PHZ
Output Disable Time 1.6 6.5
ns
t
PLZ
1.6 6.5
t
OSHL
Pin-to-Pin Skew
1.6 ns
for HL Transitions (Note 5)
t
OSLH
Pin-to-Pin Skew
1.0 ns
for LH Transitions (Note 5)
t
OST
Pin-to-Pin Skew
3.5 ns
for HL/LH Transitions (Note 5)
P1-P3P4-P6

74FR244SJ

Mfr. #:
Buy 74FR244SJ
Manufacturer:
ON Semiconductor / Fairchild
Description:
Buffers & Line Drivers Octal Buf/Line Drv
Lifecycle:
New from this manufacturer.
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