View 74ALS253N_1201823.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

INTEGRATED CIRCUITS
74ALS253 Dual 4-input multiplexer (3-State)
Product specification IC05 Data Handbook 1991 Feb 08
Philips Semiconductors
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
FEATURES
* 3-State outputs for bus interface and multiplex operation * Common select inputs * Separate output enable inputs
DESCRIPTION
The 74ALS253 has two identical 4-input multiplexers with 3-State outputs which select 2 bits from four sources by using common select input (S0, S1). When the individual output enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a High impedance (Z) state. The 74ALS253 is the logic implementation of 2-pole, 4-position switch being determined by the logic levels supplied to the common select inputs. To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the High impedance state. Therefore, only one output enable must be achieved at a time. TYPICAL SUPPLY CURRENT (TOTAL) 8mA
PIN CONFIGURATION
OEa S1 I3a I2a I1a I0a Ya GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC OEb S0 I3b I2b I1b I0b Yb
SF00798
ORDERING INFORMATION
ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C 74ALS253N 74ALS253D 74ALS253DB DRAWING NUMBER
TYPE 74ALS253
TYPICAL PROPAGATION DELAY 7.0ns
16-pin plastic DIP 16-pin plastic SO 16-pin plastic SSOP Type II
SOT38-4 SOT109-1 SOT338-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS I0a - I3a I0b - I3b S0, S1 OEa OEb Ya - Yb Port A data inputs Port B data inputs Common select inputs Port A Output Enable input (active-Low) Port B Output Enable input (active-Low) 3-State outputs DESCRIPTION 74ALS (U.L.) HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 130/240 LOAD VALUE HIGH/LOW 20A/0.1mA 20A/0.1mA 20A/0.1mA 20A/0.1mA 20A/0.1mA 2.6mA/24mA
NOTE: One (1.0) ALS unit load is defined as: 20A in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
6 5 4 3 10 11 12 13
IEC/IEEE SYMBOL
14 2 0 2 G 0 3
I0a 14 2 1 15 S0 S1 OEa OEb
I1a
I2a
I3a
I0b
I1b
I2b
I3b
1 6 5 4 3
EN 0 1 2 3
MUX 7
Ya
Yb
15 10 11 12 9
VCC = Pin 16 GND = Pin 8
7
9
13
SF00799
SC00073
1991 Feb 08
2
853-1378 01670
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
LOGIC DIAGRAM
OEa 1 I0a 6 I1a 5 I2a 4 I3a 3 S1 2 S0 14 I0b 10 I1b 11 I2b 12 I3b 13 OEb 15
FUNCTION TABLE
INPUTS S0 X L L H H L L H H S1 X L L L L H H H H I0 X L H X X X X X X I1 X X X L H X X X X I2 X X X X X L H X X I3 X X X X X X X L H OEn H L L L L L L L L OUTPUTS Yn Z L H L H L H L H
7 Ya VCC = Pin 16 GND = Pin 8
9 Yb
H L X Z
SC00074
= = = =
High voltage level Low voltage level Don't care High impedance "off" state
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state Current applied to output in Low output state Operating free-air temperature range Storage temperature range PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5 -0.5 to VCC 48 0 to +70 -65 to +150 UNIT V V mA V mA C C
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIK IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature range 0 PARAMETER MIN 4.5 2.0 0.8 -18 -2.6 24 +70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA C
1991 Feb 08
3
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 VCC10%, VIL = MAX, , , VIH = MIN VCC = MIN, VIL = MAX, , , VIH = MIN VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.4V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.4V VCC = MAX, VO = 2.25V ICC ICCZ VCC = MAX -30 7.0 9.0 IOH = -0.4mA IOH = -2.6mA IOL = 12mA IOL = 24mA LIMITS MIN VCC - 2 2.4 0.25 0.35 -0.73 0.40 0.50 -1.5 0.1 20 -0.1 20 -20 -112 12 14 TYP2 MAX UNIT V V V V V mA A mA A A mA mA mA
VO OH
High-level High level output voltage
VO OL VIK II IIH IIL IOZH IOZL IO ICC
Low-level Low level output voltage Input clamp voltage Input current at maximum input voltage High-level input current Low-level input current Off-state output current, High-level voltage applied Off-state output current, Low-level voltage applied Output current3 Supply current (total)
NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
AC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay In to Yn Propagation delay Sn to Yn Output enable time, High or Low level OEn to Yn Output disable time, High or Low level OEn to Yn Waveform 1 Waveform 1 Waveform 2 Waveform 3 Waveform 2 Waveform 3 4.0 4.0 5.0 7.0 1.0 3.0 1.0 1.0 MAX 12.0 12.0 15.0 16.0 8.0 9.0 7.0 7.0 ns ns ns ns UNIT
1991 Feb 08
4
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
AC WAVEFORMS
For all waveforms, VM = 1.3V.
In, Sn
VM tPLH
VM tPHL
Yn
VM
VM
SF00802
Waveform 1. Propagation Delay for Data and Select to Output
OEn
VM tPZH
VM tPHZ VOH -0.3V
OEn
VM tPZL
VM tPLZ 3.5V VM VOL +0.3V
Yn
VM 0V
Yn
SF00804
SC00075
Waveform 2. 3-State Output Enable Time to High Level and Output Disable Time from High Level
Waveform 3. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level
TEST CIRCUIT AND WAVEFORMS
VCC 7.0V NEGATIVE PULSE 90% VM 10% tTHL (tff) CL RL tw VM 10% tTLH (tr ) 0.3V 90% AMP (V)
VIN PULSE GENERATOR RT D.U.T.
VOUT
RL
tTLH (tr ) 90%
tTHL (tf ) AMP (V) 90% VM tw 10% 0.3V
Test Circuit for 3-State Outputs SWITCH POSITION TEST SWITCH closed tPLZ, tPZL All other open
POSITIVE PULSE 10%
VM
Input Pulse Definition INPUT PULSE REQUIREMENTS Family Amplitude VM 74ALS 3.5V 1.3V Rep.Rate 1MHz tw 500ns tTLH 2.0ns tTHL 2.0ns
DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
SC00072
1991 Feb 08
5
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
1991 Feb 08
6
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
1991 Feb 08
7
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
1991 Feb 08
8
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74ALS253
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1997 All rights reserved. Printed in U.S.A.
Philips Semiconductors
1991 Feb 08 9

▲Up To Search▲

Price & Availability of 74ALS253N

	To Download 74ALS253N Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .