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PDF TC74HC157AF Data sheet ( Hoja de datos )

Número de pieza TC74HC157AF
Descripción Quad 2-Channel Multiplexer
Fabricantes Toshiba 
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No Preview Available ! TC74HC157AF Hoja de datos, Descripción, Manual

TC74HC157,158AP/AF/AFN
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HC157AP,TC74HC157AF,TC74HC157AFN
TC74HC158AP,TC74HC158AF,TC74HC158AFN
TC74HC157AP/AF/AFN Quad 2-Channel Multiplexer
TC74HC158AP/AF/AFN Quad 2-Channel
Multiplexer (inverting)
The TC74HC157A and TC74HC158A are high speed CMOS
2-CHANNEL MULTIPLEXERs fabricated with silicon gate
C2MOS technology.
They achieve the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
The TC74HC158A is an inverting multiplexer while the
TC74HC157A is a non-inverting.
When STROBE is held high, selection of data is inhibited and
all the outputs become low in the case of HC157A or high in the
case of HC158A.
The SELECT decoding determines whether the A or B inputs
get transferred to their corresponding Y ( Y ) outputs.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74HC157AP, TC74HC158AP
TC74HC157AF, TC74HC158AF
Features
High speed: tpd = 10 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 74LS157/158
TC74HC157AFN, TC74HC158AFN
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

1 page




TC74HC157AF pdf
TC74HC157,158AP/AF/AFN
AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns)
Characteristics
Output transition time
Propagation delay
time
(A, B-Y, Y )
Propagation delay
time
(SELECT-Y, Y )
Propagation delay
time
( STOROBE -Y, Y )
Input capacitance
Power dissipation
capacitance
Symbol
Test Condition
tTLH
tTHL
tpLH
tpHL
tpLH
tpHL
tpLH
tpHL
CIN
CPD
TC74HC157A
(Note) TC74HC158A
VCC (V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Ta = 25°C
Min Typ. Max
30 75
8 15
7 13
36 100
12 20
10 17
50 125
16 25
14 21
36 115
12 23
10 20
5 10
57
53
Ta =
40 to 85°C
Min Max
95
19
16
125
25
21
155
31
26
145
29
25
10
⎯⎯
⎯⎯
Unit
ns
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) = CPDVCCfIN + ICC/4 (per bit)
5 2007-10-01

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