74F2240 Datasheet, PDF (1/5 Pages) NXP Semiconductors – Octal inverter buffer with 30ohm equivalent output termination 3-State

January 1995
Revised May 1999
74F2240
Octal Buffer/Line Driver
with 25Ω 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 25Ω 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 25Ω 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 Package Number
Package Description
74F2240SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F2240QC
V20A
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 “X” to the ordering code.
Connection Diagram
Truth Table
OE₁
D_1n
O_1n
OE₂
D_2n
O_2n
H
X
Z
H
X
Z
L
H
L
L
H
L
L
L
H
L
L
H
Unit Loading/Fan Out
Pin
Names
Description
U.L.
HIGH/LOW
Output
I_OH/I_OL
OE₁, OE₂ 3-STATE Output
Enable Input
1.0/1.667 20 µA/−1 mA
(Active LOW)
I₀ - I₇
O₀ - O₇
Inputs
Outputs
1.0/1.667 20 µA/−1 mA
750/20 −15 mA/12 mA
© 1999 Fairchild Semiconductor Corporation DS010898.prf
www.fairchildsemi.com