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PDF TC74VHC157F Data sheet ( Hoja de datos )

Número de pieza TC74VHC157F
Descripción QUAD 2-CHANNEL MULTIPLEXER
Fabricantes Toshiba 
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TC74VHC157F/FN/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VHC157F,TC74VHC157FN,TC74VHC157FT,TC74VHC157FK
Quad 2-Channel Multiplexer
The TC74VHC157 is an advanced high speed CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with silicon gate
C2MOS technology.
It achieves the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
It consists of four 2-input digital multiplexers 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.
An Input protection circuit ensures that 0 to 5.5 V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5 V to 3 V systems and on
two supply systems such as battery back up. This circuit
prevents device destruction due to mismatched supply and input
voltages.
Features
High speed: tpd = 4.1 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)
Power down protection is provided on all inputs.
Balanced propagation delays: tpLH ∼− tpHL
Wide operating voltage range: VCC (opr) = 2 V to 5.5 V
Low noise: VOLP = 0.8 V (max)
Pin and function compatible with 74ALS157
Note: xxxFN (JEDEC SOP) is not available in
Japan.
TC74VHC157F
TC74VHC157FN
TC74VHC157FT
TC74VHC157FK
Weight
SOP16-P-300-1.27A
SOL16-P-150-1.27
TSSOP16-P-0044-0.65A
VSSOP16-P-0030-0.50
: 0.18 g (typ.)
: 0.13 g (typ.)
: 0.06 g (typ.)
: 0.02 g (typ.)
1 2007-10-01

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TC74VHC157F pdf
TC74VHC157F/FN/FT/FK
AC Characteristics (input: tr = tf = 3 ns)
Characteristics
Symbol
Propagation delay
time
(A, B-Y)
tpLH
tpHL
Propagation delay
time
(SELECT-Y)
tpLH
tpHL
Propagation delay
time
( ST -Y)
Input capacitance
Power dissipation
capacitance
tpLH
tpHL
CIN
CPD
Test Condition
VCC (V) CL (pF)
3.3 ± 0.3
15
50
15
5.0 ± 0.5
50
15
3.3 ± 0.3
50
15
5.0 ± 0.5
50
15
3.3 ± 0.3
50
15
5.0 ± 0.5
50
Ta = 25°C
Min Typ. Max
6.2 9.7
8.7 13.2
4.1 6.4
5.6 8.4
8.4 13.2
10.9 16.7
5.3 8.1
6.8 10.1
8.7 13.6
11.2 17.1
5.6 8.6
7.1 10.6
4 10
(Note) 20
Ta =
40 to 85°C
Min Max
1.0 11.5
1.0 15.0
1.0 7.5
1.0 9.5
1.0 15.5
1.0 19.0
1.0 9.5
1.0 11.5
1.0 16.0
1.0 19.5
1.0 10.0
1.0 12.0
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)
Noise Characteristics (input: tr = tf = 3 ns)
Characteristics
Symbol
Quiet output maximum dynamic VOL
Quiet output minimum dynamic VOL
Minimum high level dynamic input
voltage
Maximum low level dynamic input
voltage
VOLP
VOLV
VIHD
VILD
CL = 50 pF
CL = 50 pF
CL = 50 pF
CL = 50 pF
Test Condition
VCC (V)
5.0
5.0
5.0
Ta = 25°C
Typ. Limit
0.3 0.8
0.3 0.8
3.5
Unit
V
V
V
5.0
1.5
V
5 2007-10-01

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TC74VHC157F arduino
TC74VHC157F/FN/FT/FK
RESTRICTIONS ON PRODUCT USE
The information contained herein is subject to change without notice.
20070701-EN GENERAL
TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
TOSHIBA or the third parties.
Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
11 2007-10-01

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