TC74HC7240,7244AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HC7240AP,TC74HC7240AF,TC74HC7244AP,TC74HC7244AF
Octal Bus Buffer (with schmitt trigger inputs)
TC74HC7240AP/AF Inverted, 3-State Outputs
TC74HC7244AP/AF Non-Inverted, 3-State
Outputs
The TC74HC7240A/7244A are high speed CMOS OCTAL BUS
BUFFERs with silicon gate C
2
MOS technology.
They achieve the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
The TC74HC7240A/7244A have same pin configuration and
function as the TC74HC240A/244A. And they have a hystereis
characterictics with each input, so TC74HC7240A/7244A can be
used as a line receiver, etc.
They have two active low output enables.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74HC7240AP, TC74HC7244AP
TC74HC7240AF, TC74HC7244AF
Features
•
•
•
•
•
•
•
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High speed: t
pd
= 15 ns (typ.) at V
CC
= 5 V
Low power dissipation: I
CC
= 4
μA
(max) at Ta = 25°C
High noise immunity: V
H
= 1.1 V (typ.) at V
CC
= 5 V
Output drive capability: 15 LSTTL loads
Symmetrical output impedance: |I
OH
| = I
OL
= 6 mA (min)
Balanced propagation delays: t
pLH
∼
t
pHL
−
Wide operating voltage range: V
CC
(opr) = 2 to 6 V
Pin and function compatible with 74LS240/244
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
: 1.30 g (typ.)
: 0.22 g (typ.)
Pin Assignment
TC74HC7240A
TC74HC7244A
1
2007-10-01
TOSHIBA [ TOSHIBA SEMICONDUCTOR ]
