TC74HC257AP_07 Datasheet, PDF (1/8 Pages) Toshiba Semiconductor – Quad 2-Channel Multiplexer (3-state)

TC74HC257AP/AF/AFN
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC257AP,TC74HC257AF,TC74HC257AFN
Quad 2-Channel Multiplexer (3-state)
The TC74HC257A is high speed CMOS MULTIPLEXER
fabricated with silicon gate C²MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
It is composed of four independent 2-channel multiplexers with
common SELECT and OUTPUT ENABLE ( OE ).
If OE is set low, the outputs are held in a high-impedance
state. When SELECT is set low, “A” data inputs are enabled.
Conversely, when SELECT is high, “B” data inputs are
enabled.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
• High speed: t_pd = 10 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: 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) = 2~6 V
• Pin and function compatible with 74LS257
Pin Assignment
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74HC257AP
TC74HC257AF
TC74HC257AFN
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
SOL20-P-150-1.27
: 1.00 g (typ.)
: 0.18 g (typ.)
: 0.13 g (typ.)
1
2007-10-01