74VHC257MTR STMicroelectronics, 74VHC257MTR Datasheet

IC MUX QUAD 2CHAN 3-STATE 16SOIC

74VHC257MTR

Manufacturer Part Number
74VHC257MTR
Description
IC MUX QUAD 2CHAN 3-STATE 16SOIC
Manufacturer
STMicroelectronics
Series
74VHCr
Type
Multiplexerr
Datasheet

Specifications of 74VHC257MTR

Circuit
4 x 2:1
Independent Circuits
1
Current - Output High, Low
8mA, 8mA
Voltage Supply Source
Single Supply
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DESCRIPTION
The 74VHC257 is an advanced high-speed
CMOS
(3-STATE) fabricated with sub-micron silicon gate
and double-layer metal wiring C
It is composed of four independent 2-channel
multiplexers with common SELECT and ENABLE
(OE) INPUT. The VHC257 is a non-inverting
multiplexer. When the ENABLE INPUT is held
Figure 1: Pin Connection And IEC Logic Symbols
November 2004
HIGH SPEED: t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
POWER DOWN PROTECTION ON INPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 257
IMPROVED LATCH-UP IMMUNITY
LOW NOISE: V
CC
PLH
OH
NIH
CC
= 4 A (MAX.) at T
| = I
(OPR) = 2V to 5.5V
= V
QUAD
t
PHL
OL
NIL
= 8mA (MIN)
= 28% V
2-CHANNEL
OLP
PD
= 3.7ns (TYP.) at V
= 0.8V (MAX.)
CC
A
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
=25°C
(MIN.)
2
MOS technology.
MULTIPLEXER
CC
= 5V
Table 1: Order Codes
"High", all outputs become in high impedance
state. If SELECT INPUT is held "Low", "A" data is
selected, when SELECT INPUT is "High", "B" data
is chosen.
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.
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
74VHC257
Rev. 4
74VHC257MTR
74VHC257TTR
TSSOP
T & R
1/14

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74VHC257MTR Summary of contents

Page 1

... This device can be 2 MOS technology. used to interface 5V to 3V. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. 74VHC257 SOP TSSOP PACKAGE T & R SOP 74VHC257MTR TSSOP 74VHC257TTR Rev. 4 1/14 ...

Page 2

Figure 2: Input Equivalent Circuit Table 3: Truth Table OE SELECT Don’t Care Z : High Impedance Figure 3: Logic Diagram This logic diagram has not be used to estimate propagation delays ...

Page 3

Table 4: Absolute Maximum Ratings Symbol V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 4

Table 6: DC Specifications Symbol Parameter V V High Level Input 2.0 IH Voltage 3.0 to 5.5 V Low Level Input 2.0 IL Voltage 3.0 to 5.5 V High Level Output 2.0 OH Voltage 3.0 4.5 3.0 4.5 V ...

Page 5

Table 7: AC Electrical Characteristics (Input t Symbol Parameter V t Propagation Delay 3.3 PLH Time PHL 3.3 5.0 5.0 t Propagation Delay 3.3 PLH Time t PHL 3.3 SELECT to Y 5.0 5.0 t ...

Page 6

Table 9: Dynamic Switching Characteristics Symbol Parameter V V Dynamic Low OLP Voltage Quiet 5.0 V OLV Output (note 1, 2) Dynamic High V Voltage Input 5.0 IHD (note 1, 3) Dynamic Low V Voltage Input 5.0 ILD (note ...

Page 7

Figure 5: Waveform - Propagation Delays For Inverting Conditions (f=1MHz; 50% duty cycle) Figure 6: Waveform - Propagation Delays For Non-inverting Conditions (f=1MHz; 50% duty cycle) 74VHC257 7/14 ...

Page 8

Figure 7: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 8/14 ...

Page 9

SO-16 MECHANICAL DATA mm. DIM. MIN. TYP 0. 9.8 E 5.8 e 1.27 e3 8.89 F 3.8 G 4 MAX. MIN. 1.75 0.25 0.004 1.64 0.46 ...

Page 10

DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 4.9 E 6 0˚ PIN 1 IDENTIFICATION 1 10/14 TSSOP16 MECHANICAL DATA mm. TYP MAX. 1.2 0.15 ...

Page 11

Tape & Reel SO-16 MECHANICAL DATA mm. DIM. MIN. TYP A C 12 6.45 Bo 10.3 Ko 2.1 Po 3.9 P 7.9 MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 6.65 0.254 10.5 0.406 ...

Page 12

Tape & Reel TSSOP16 MECHANICAL DATA DIM. MIN 12 6.7 Bo 5.3 Ko 1.6 Po 3.9 P 7.9 12/14 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 6.9 0.264 ...

Page 13

Table 10: Revision History Date Revision 12-Nov-2004 4 Description of Changes Order Codes Revision - pag. 1. 74VHC257 13/14 ...

Page 14

... 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. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...

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