TC74HC251AP_07 Datasheet, PDF (1/9 Pages) Toshiba Semiconductor – 8-Channel Multiplexer (3-state)

TC74HC251AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC251AP,TC74HC251AF
8-Channel Multiplexer (3-state)
The TC74HC251A is a high speed CMOS 8-CHANNEL
MULTIPLEXER fabricated with silicon gate C²MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
One of eight date input signals (D0-D7) is selected by decoding
of the address input (A, B, C). The selected data appears on two
outputs; non-inverting (Y) and inverting (W). When the strobe
input is held high, both outputs are in the high-impedance state.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
• 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_NIH = V_NIL = 28% V_CC (min)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |I_OH| = I_OL = 4 mA (min)
• Balanced propagation delays: t_pLH ^∼− t_pHL
• Wide operating voltage range: V_CC (opr) = 2~6 V
• Pin and function compatible with 74LS251
Pin Assignment
TC74HC251AP
TC74HC251AF
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
1
2007-10-01