TC74AC240,244P/F/ FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74AC240P, TC74AC240F, TC74AC240FT
TC74AC244P, TC74AC244F, TC74AC244FT
Octal Bus Buffer
TC74AC240P/F/FT
TC74AC244P/F/FT
Inverted, 3-State
Outputs
Non-Inverted, 3-State
Outputs
The TC74AC240 and 244 are advanced high speed CMOS
OCTAL BUS BUFFERs fabricated with silicon gate and
double-layer metal wiring C2MOS technology.
They achieve the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
The 74AC240 is an inverting 3-state buffer while the 74AC244
is non-inverting. Both devices have two active-low output
enables.
These devices are designed to be used in such applications as
3-state memory address drivers.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC74AC240P, TC74AC244P
TC74AC240F, TC74AC244F
TC74AC240FT, TC74AC244FT
Features
•
High speed: tpd = 4.0 ns (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 8 μA (max) at Ta = 25°C
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
•
Capability of driving 50 Ω
transmission lines.
Balanced propagation delays: tpLH ∼ tpHL
−
•
Wide operating voltage range: VCC (opr) = 2 to 5.5 V
•
Pin and function compatible with 74F240/244
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
TSSOP20-P-0044-0.65A
: 1.30 g (typ.)
: 0.22 g (typ.)
: 0.08 g (typ.)
Start of commercial production
1986-05
1
2014-03-01
