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PDF TC74HC155AF Data sheet ( Hoja de datos )
| Número de pieza | TC74HC155AF | |
| Descripción | Dual 2-to-4 Line Decoder 3-to-8 Line Decoder | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TC74HC155AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC155AP, TC74HC155AF
Dual 2-to-4 Line Decoder 3-to-8 Line Decoder
The TC74HC155A is a high speed CMOS DUAL 2-to-4 LINE
DECODER fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
It features dual 1-to-4 line demultiplexers with individual
strobe input (1G and 2G), individual data inputs (1C and 2C) and
common binary address inputs (A and B).
When both decoders are enabled by the strobes, the inverted
output of 1C data and non-inverted output of 2C data will be
brought to the selected output pins of each section.
A 1-to-8 line demultiplexer can be easily built up by providing
a data signal to both the 1C and 2C inputs; the output order will
be 1Y3 (MSB), 1Y2, 1Y1, 1Y0, 2Y3, 2Y2, 2Y1, 2Y0 (LSB).
This device can be used as a 2-to-4 line decoder or a 3-to-8 line
decoder when 1C is held high and 2C is held low.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
• High speed: tpd = 12 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 to 6 V
• Pin and function compatible with 74LS155
Pin Assignment
TC74HC155AP
TC74HC155AF
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Start of commercial production
1987-07
1 2014-03-01
1 page  
TC74HC155AP/AF
AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns)
Characteristics
Symbol
Output transition time
Propagation delay
time
Input capacitance
Power dissipation
capacitance
tTLH
tTHL
tpLH
tpHL
CIN
CPD
(Note)
Test Condition
⎯
⎯
⎯
VCC (V)
2.0
4.5
6.0
2.0
4.5
6.0
Ta = 25°C
Min Typ. Max
⎯ 30 75
⎯ 8 15
⎯ 7 13
⎯ 45 130
⎯ 15 26
⎯ 13 22
⎯ 5 10
⎯ ⎯ 53 ⎯
Ta =
−40 to 85°C
Min Max
⎯ 95
⎯ 19
⎯ 16
⎯ 165
⎯ 33
⎯ 28
⎯ 10
⎯⎯
Unit
ns
ns
pF
pF
Note:
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC
5 2014-03-01
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet TC74HC155AF.PDF ] | |
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