74lvx157 STMicroelectronics, 74lvx157 Datasheet

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74lvx157

Manufacturer Part Number
74lvx157
Description
Low Voltage Quad 2 Channel Multiplexer With 5v Tolerant Inputs
Manufacturer
STMicroelectronics
Datasheet

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0
DESCRIPTION
The 74LVX157 is a low voltage CMOS QUAD 2
CHANNEL
sub-micron silicon gate and double-layer metal
wiring C
power, battery operated and low noise 3.3V
applications.
It consists of four 2-input digital multiplexers with
common select and strobe inputs. When STROBE
Figure 1: Pin Connection And IEC Logic Symbols
August 2004
HIGH SPEED:
t
5V TOLERANT INPUTS
INPUT VOLTAGE LEVEL:
V
LOW POWER DISSIPATION:
I
LOW NOISE:
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
IMPROVED LATCH-UP IMMUNITY
POWER DOWN PROTECTION ON INPUTS
PD
CC
PLH
OH
IL
OLP
CC
=0.8V, V
= 5.1 ns (TYP.) at V
= 2 A (MAX.) at T
| = I
(OPR) = 2V to 3.6V (1.2V Data Retention)
= 0.3V (TYP.) at V
2
t
MOS technology. It is ideal for low
PHL
OL
MULTIPLEXER
= 4mA (MIN)
IH
=2V at V
LOW VOLTAGE QUAD 2 CHANNEL MULTIPLEXER
CC
A
CC
=25°C
CC
=3V
= 3.3V
= 3.3V
fabricated
with
WITH 5V TOLERANT INPUTS
Table 1: Order Codes
input is held high, selection of data is inhibited and
all the outputs become low. The SELECT
decoding determines whether the A or B inputs
get routed to their corresponding Y outputs.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V
system. It combines high speed performance with
the true CMOS low power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PACKAGE
TSSOP
SOP
SOP
74LVX157
Rev. 3
74LVX157MTR
74LVX157TTR
TSSOP
T & R
1/12

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74lvx157 Summary of contents

Page 1

... Data Retention) CC PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 157 IMPROVED LATCH-UP IMMUNITY POWER DOWN PROTECTION ON INPUTS DESCRIPTION The 74LVX157 is a low voltage CMOS QUAD 2 CHANNEL MULTIPLEXER sub-micron silicon gate and double-layer metal 2 wiring C MOS technology ideal for low power, battery operated and low noise 3 ...

Page 2

... Figure 2: Input Equivalent Circuit Table 3: Truth Table STROBE SELECT Don’t Care Table 4: Absolute Maximum Ratings Symbol V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 3

... CC (V) Min. 3.3 -0.5 3 3.3 Value = 25°C -40 to 85°C -55 to 125°C A Typ. Max. Min. Max. Min. 1.5 1.5 2.0 2.0 2.4 2.4 0.5 0.5 0.8 0.8 0.8 0.8 2.0 1.9 1.9 3.0 2.9 2.9 2.48 2.4 0.0 0.1 0.1 0.0 0.1 0.1 0.36 0.44 0 Value = 25°C -40 to 85°C -55 to 125°C A Typ. Max. Min. Max. Min. 0.3 0.5 -0.3 0.8 74LVX157 Unit Max. V 0.5 0.8 V 0.8 V 0.1 0 Unit Max threshold ILD 3/12 ...

Page 4

... Table 8: AC Electrical Characteristics (Input t Symbol Parameter t t Propagation Delay PLH PHL Time ( 3.3 3 Propagation Delay PLH PHL Time (SELECT - Y) 3.3 3 Propagation Delay PLH PHL Time (STROBE - Y) 3.3 3.3 t Output To Output OSLH Skew Time (note1, t OSHL 3 Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch- ...

Page 5

... Figure 3: Test Circuit C =15/50pF or equivalent (includes jig and probe capacitance pulse generator (typically OUT Figure 4: Waveform - Propagation Delays For Inverting Conditions (f=1MHz; 50% duty cycle) 74LVX157 5/12 ...

Page 6

... Figure 5: Waveform- Propagation Delays For Non-inverting Conditions (f=1MHz; 50% duty cycle) 6/12 ...

Page 7

... 9 3.8 G 4 mm. TYP MAX. 1.75 0.25 0.004 1.64 0.46 0.013 0.25 0.007 0.5 45° (typ.) 10 0.385 6.2 0.228 1.27 8.89 4.0 0.149 5.3 0.181 1.27 0.019 0.62 8° (max.) 74LVX157 inch MIN. TYP. 0.019 0.050 0.350 0016020D MAX. 0.068 0.010 0.063 0.018 0.010 0.393 0.244 0.157 0.208 0.050 0.024 7/12 ...

Page 8

... DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 4.9 E 6 0˚ PIN 1 IDENTIFICATION 1 8/12 TSSOP16 MECHANICAL DATA mm. TYP MAX. 1.2 0.15 1 1.05 0.30 0.20 5 5.1 6.4 6.6 4.4 4.48 0.65 BSC 8˚ 0.60 0. inch MIN. TYP. 0.002 0.004 0.031 0.039 0.007 0.004 0.0079 0.193 0.197 0.244 0.252 0.169 0.173 0.0256 BSC 0˚ ...

Page 9

... Tape & Reel SO-16 MECHANICAL DATA DIM. MIN 12 6.45 Bo 10.3 Ko 2.1 Po 3.9 P 7.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 6.65 0.254 10.5 0.406 2.3 0.082 4.1 0.153 8.1 0.311 74LVX157 inch MIN. TYP. MAX. 12.992 0.519 0.882 0.262 0.414 0.090 0.161 0.319 9/12 ...

Page 10

... Tape & Reel TSSOP16 MECHANICAL DATA DIM. MIN 12 6.7 Bo 5.3 Ko 1.6 Po 3.9 P 7.9 10/12 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 6.9 0.264 5.5 0.209 1.8 0.063 4.1 0.153 8.1 0.311 inch MIN. TYP. MAX. 12.992 0.519 0.882 0.272 0.217 0.071 0.161 0.319 ...

Page 11

... Table 10: Revision History Date Revision 27-Aug-2004 3 Description of Changes Ordering Codes Revision - pag. 1. 74LVX157 11/12 ...

Page 12

... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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