TC74AC244F_07 Datasheet, PDF (1/9 Pages) Toshiba Semiconductor – CMOS Digital Integrated Circuit Silicon Monolithic

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
TC74AC240P, TC74AC244P
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.
Features
• High speed: t_pd = 4.0 ns (typ.) at V_CC = 5 V
• Low power dissipation: I_CC = 8 μA (max) at Ta = 25°C
• High noise immunity: V_NIH = V_NIL = 28% V_CC (min)
• Symmetrical output impedance: |I_OH| = I_OL = 24 mA (min)
Capability of driving 50 Ω
transmission lines.
• Balanced propagation delays: t_pLH ^∼− t_pHL
• Wide operating voltage range: V_{CC (opr)} = 2 to 5.5 V
• Pin and function compatible with 74F240/244
TC74AC240F, TC74AC244F
TC74AC240FT, TC74AC244FT
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.)
1
2007-10-01