74FR2244PC
器件描述：Octal Buffer/Line Driver with 25ヘ Series Resistors in the Outputs
器件厂商：FAIRCHILD [Fairchild Semiconductor]
文件大小：52.01KB，共5页
Sponsor by e络盟器件资料摘要：
© 1999 Fairchild Semiconductor Corporation DS010931 www.fairchildsemi.com
June 1991
Revised August 1999
7
4FR2244
O
c
t
a
l
Buf
f
er
/Li
ne Dr
iver
74FR2244
Octal Buffer/Line Driver
with 25Ω Series Resistors in the Outputs
General Description
The 74FR2244 is a non-inverting octal buffer and line driver
designed to drive capacitive inputs of MOS memory
devices, address and clock lines or act as a low under-
shoot general purpose bus driver.
Features
a73 3-STATE outputs drive bus lines or buffer memory
address registers
a73 Outputs sink 12 mA and source 15 mA
a73 25Ω series resistors in outputs eliminate the need for
external resistors
a73 Designed to drive the capacitive inputs of MOS devices
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
74FR2244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74FR2244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74FR2244PC 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
June 1991
Revised August 1999
7
4FR2244
O
c
t
a
l
Buf
f
er
/Li
ne Dr
iver
74FR2244
Octal Buffer/Line Driver
with 25Ω Series Resistors in the Outputs
General Description
The 74FR2244 is a non-inverting octal buffer and line driver
designed to drive capacitive inputs of MOS memory
devices, address and clock lines or act as a low under-
shoot general purpose bus driver.
Features
a73 3-STATE outputs drive bus lines or buffer memory
address registers
a73 Outputs sink 12 mA and source 15 mA
a73 25Ω series resistors in outputs eliminate the need for
external resistors
a73 Designed to drive the capacitive inputs of MOS devices
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
74FR2244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74FR2244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74FR2244PC 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