74F2240 Octal Buffer/Line Driver
January 1995
Revised May 1999
74F2240
Octal Buffer/Line Driver
with 25鈩?Series Resistors in the Outputs
General Description
The 74F2240 is an 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.
The 25鈩?series resistor in the outputs reduces undershoot
and ringing and eliminates the need for external resistors.
Features
s
3-STATE outputs drive bus lines or buffer memory
address registers
s
Outputs sink 12 mA and source 15 mA
s
25鈩?series resistors in outputs eliminate the need for
external resistors
s
Designed to drive the capacitive inputs of MOS devices
s
Guaranteed 4000V minimum ESD protection
Ordering Code:
Order Number
74F2240SC
74F2240QC
Package Number
M20B
V20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.350 Square
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Connection Diagram
Truth Table
OE
1
H
L
L
D
1n
X
H
L
O
1n
Z
L
H
OE
2
H
L
L
D
2n
X
H
L
O
2n
Z
L
H
Unit Loading/Fan Out
Pin
Description
Names
OE
1
, OE
2
3-STATE Output
Enable Input
(Active LOW)
I
0
- I
7
O
0
- O
7
Inputs
Outputs
1.0/1.667
750/20
20
碌A(chǔ)/鈭?
mA
鈭?5
mA/12 mA
1.0/1.667
20
碌A(chǔ)/鈭?
mA
HIGH/LOW
U.L.
Output
I
OH
/I
OL
漏 1999 Fairchild Semiconductor Corporation
DS010898.prf
www.fairchildsemi.com