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TC74HC238AF fiches techniques PDF

Toshiba - 3-to-8 Line Decoder

Numéro de référence TC74HC238AF
Description 3-to-8 Line Decoder
Fabricant Toshiba 
Logo Toshiba 





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TC74HC238AF fiche technique
TC74HC238AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC238AP,TC74HC238AF
3-to-8 Line Decoder
The TC74HC238A is a high speed CMOS 3-to-8 DECODER
fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
When the device is enabled, 3 Binary Select inputs (A, B and C)
determine which one of the outputs (Y0-Y7) will go high.
When enable input G1 is held low or either G2A or G2B is
held high, decoding function is inhibited and all the outputs go
low. G1, G2A , and G2B inputs are provided ease cascade
connection and for use as an adress decoder for memory systems.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
High speed: tpd = 14 ns (typ.) at VCC = 5 V
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
High noise immunity: VNIH = VNIL = 28% VCC (min)
Output drive capability: 10 LSTTL loads
Symmetrical output impedance: |IOH| = IOL = 4 mA (min)
Balanced propagation delays: tpLH ∼− tpHL
Wide operating voltage range: VCC (opr) = 2~6 V
Pin and function compatible with 74LS238
Pin Assignment
TC74HC238AP
TC74HC238AF
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
1 2007-10-01

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