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 C2MOS 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
•
High speed: tpd = 15 ns (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
•
High noise immunity: VH = 1.1 V (typ.) at VCC = 5 V
•
Output drive capability: 15 LSTTL loads
•
•
Symmetrical output impedance: |IOH| = IOL = 6 mA (min)
∼
Balanced propagation delays: tpLH − tpHL
•
Wide operating voltage range: VCC (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