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74FR244SJ の電気的特性と機能

74FR244SJのメーカーはFairchildです、この部品の機能は「Octal Buffer/Line Driver with 3-STATE Outputs」です。


製品の詳細 ( Datasheet PDF )

部品番号 74FR244SJ
部品説明 Octal Buffer/Line Driver with 3-STATE Outputs
メーカ Fairchild
ロゴ Fairchild ロゴ 




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74FR244SJ Datasheet, 74FR244SJ PDF,ピン配置, 機能
December 1990
Revised August 1999
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
s 3-STATE outputs drive bus lines or buffer memory
address registers
s Outputs sink 64 mA and source 15 mA
s Guaranteed pin-to-pin skew
Ordering Code:
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
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names
OE1,–OE2
I0–I7
O0–O7
Description
Output Enable Input (Active-LOW)
Inputs
Outputs
Truth Tables
Inputs
OE1
In
LL
LH
HX
Inputs
OE2
In
LL
LH
HX
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Outputs
(Pins 12, 14, 16, 18)
L
H
Z
Outputs
(Pins 3, 5, 7, 9)
L
H
Z
© 1999 Fairchild Semiconductor Corporation DS010900
www.fairchildsemi.com

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74FR244SJ pdf, ピン配列
AC Electrical Characteristics
Symbol
Parameter
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
Output Enable Time
Output Disable Time
Extended AC Characteristics
TA = +25°C
VCC = +5.0V
CL = 50 pF
Min Typ Max
1.0 2.6 3.9
1.0 1.8 3.9
2.5 4.8 6.6
2.5 3.9 6.6
1.6 3.7 6.4
1.6 3.6 6.4
TA = 0°C to +70°C
VCC = +5.0V
CL = 50 pF
Min Max
1.0 3.9
1.0 3.9
2.5 6.6
2.5 6.6
1.6 6.4
1.6 6.4
Units
ns
ns
ns
TA = 0°C to +70°C
TA = 0°C to +70°C
VCC = +5.0V
VCC = +5.0V
Symbol
Parameter
CL = 50 pF
Eight Outputs Switching
CL = 250 pF
(Note 4)
Units
(Note 3)
Min Max Min Max
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tOSHL
Propagation Delay
Output Enable Time
Output Disable Time
Pin-to-Pin Skew
for HL Transitions (Note 5)
1.0 5.0 2.3 7.3
ns
1.0 5.0 2.3 7.3
2.5 7.7
2.5 7.7
ns
1.6 6.5
1.6 6.5
ns
1.6 ns
tOSLH
Pin-to-Pin Skew
for LH Transitions (Note 5)
1.0 ns
tOST Pin-to-Pin Skew
for HL/LH Transitions (Note 5)
3.5 ns
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, (tOSHL), LOW-to-HIGH, (tOSLH), or HIGH-to-LOW and/or LOW-to-HIGH, (tOST). Specification guaran-
teed with all outputs switching in phase.
3 www.fairchildsemi.com


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共有リンク

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部品番号部品説明メーカ
74FR244SC

Octal Buffer/Line Driver with 3-STATE Outputs

Fairchild
Fairchild
74FR244SJ

Octal Buffer/Line Driver with 3-STATE Outputs

Fairchild
Fairchild


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