TC74AC257P_07 Datasheet, PDF (1/9 Pages) Toshiba Semiconductor – CMOS Digital Integrated Circuit Silicon Monolithic

TC74AC257,258P/F/FN
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC257P,TC74AC257F,TC74AC257FN
TC74AC258P,TC74AC258F,TC74AC258FN
TC74AC257P/F/FN 2-Channel Multiplexer (3-state)
TC74AC258P/F/FN 2-Channel Multiplexer (3-state,
inverting)
The TC74AC257 and TC74AC258 are advanced high speed
CMOS MULTIPLEXERs 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.
Each is composed of four independent 2-channel multiplexers
with common SELECT and OUTPUT ENABLE ( OE ).
The TC74AC257 is a non-inverting multiplexer, while the
TC74AC258 is an inverting.
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 = 3.6 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) = 2~5.5 V
• Pin and function compatible with 74F257/258
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74AC257P, TC74AC258P
TC74AC257F, TC74AC258F
TC74AC257FN, TC74AC258FN
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
SOL16-P-150-1.27
: 1.00 g (typ.)
: 0.18 g (typ.)
: 0.13 g (typ.)
1
2007-10-01