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PDF TC74AC157P Data sheet ( Hoja de datos )
| Número de pieza | TC74AC157P | |
| Descripción | QUAD 2-CHANNEL MULTIPLEXER | |
| Fabricantes | Toshiba Semiconductor | |
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TC74AC157P/F/FN/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC157P,TC74AC157F,TC74AC157FN,TC74AC157FT
Quad 2-Channel Multiplexer
The TC74AC157 is an advanced high speed CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with silicon gate and
double-layer metal wiring C2MOS technology.
It achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
This device consist of four 2-input digital multiplexer with
common select and strobe inputs.
When the STROBE input is held “H” level, selection of data
is inhibited and all the outputs become “L” level.
The SELECT decoding determines whether the A or B inputs
get routed to their corresponding Y outputs.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
• High speed: tpd = 4.5 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 8 μA (max) at Ta = 25°C
• High noise immunity: VNIH = VNIL = 28% VCC (min)
• Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
Capability of driving 50 Ω
transmission lines.
• Balanced propagation delays: tpLH ∼− tpHL
• Wide operating voltage range: VCC (opr) = 2 to 5.5 V
• Pin and function compatible with 74F157
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74AC157P
TC74AC157F
TC74AC157FN
TC74AC157FT
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
SOL16-P-150-1.27
TSSOP16-P-0044-0.65A
: 1.00 g (typ.)
: 0.18 g (typ.)
: 0.13 g (typ.)
: 0.06 g (typ.)
1 2007-10-01
1 page  
TC74AC157P/F/FN/FT
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Characteristics
Propagation delay
time
(A, B-Y)
Propagation delay
time
(SELECT-Y)
Propagation delay
time
( ST -Y)
Input capacitance
Power dissipation
capacitance
Symbol
tpLH
tpHL
tpLH
tpHL
tpLH
tpHL
CIN
CPD
Test Condition
―
―
―
―
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
Ta = 25°C
Min Typ. Max
― 7.2 12.2
― 5.5 7.9
3.3 ± 0.3
5.0 ± 0.5
―
―
8.5 14.5
6.3 9.1
3.3 ± 0.3
5.0 ± 0.5
―
―
―
(Note) ―
8.6 14.6
6.4 9.2
5 10
93 ―
Ta =
−40 to 85°C
Min Max
1.0 14.0
1.0 9.1
1.0 16.7
1.0 10.5
1.0 16.8
1.0 10.6
― 10
――
Unit
ns
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/4 (per bit)
5 2007-10-01
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TC74AC157P.PDF ] | |
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