|
|
Part: 8509601FA
Category:
Logic
-> Encoders/Multiplexers
-> Multiplexers
Description: ti SN54ALS253, Dual 1-Of-4 Data Selectors/multiplexers With 3-State Outputs
Company: Texas Instruments, Inc.
Datasheet: Download 8509601FA datasheet File size : 209 kB
Request For quote: Find where to buy 8509601FA
Datasheet text preview:
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
· · · ·
3-State Versions of the ALS153 and SN74AS153 Permits Multiplexing From n Lines to One Line Performs Parallel-to-Serial Conversion Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
SN54ALS253 . . . J PACKAGE SN74ALS253, SN74AS253A . . . D OR N PACKAGE (TOP VIEW)
description
These data selectors/multiplexers contain inverters and drivers to supply full binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two 4-line sections. The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Each output has its own output-enable (OE) input. The output is disabled when OE is high. The SN54ALS253 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS253 and SN74AS253A are characterized for operation from 0°C to 70°C.
FUNCTION TABLE INPUTS SELECT B X L L L L H H H A X L L H H L L H C0 X L H X X X X X X X X L H X X X DATA C1 C2 X X X X X L H X C3 X X X X X X X L OE H L L L L L L L
1OE B 1C3 1C2 1C1 1C0 1Y GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VC C 2OE A 2C3 2C2 2C1 2C0 2Y
SN54ALS253 . . . FK PACKAGE (TOP VIEW)
B 1OE NC VCC 2OE 1C3 1C2 NC 1C1 1C0
3 4 5 6 7 8 2 1 20 19 18 17 16 15 14 9 10 11 12 13
A 2C3 NC 2C2 2C1
NC No internal connection
OUTPUT Y Z L H L H L H L H
H H X X X H L Select inputs A and B are common to both sections.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1Y GND NC 2Y 2C0
1
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
logic symbol
A B 14 2 0 1
G0 3
1OE 1C0 1C1 1C2 1C3 2OE 2C0 2C1 2C2 2C3
1 6 5 4 3 15 10 11 12 13
EN 0 1 2 3
MUX 7
1Y
9
2Y
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, and N packages.
logic diagram (positive logic)
1OE 1C0 1 6
1C1 Data 1 1C2
5 7 4 1Y
1C3 B Select A 2C0 2C1 Data 2 2C2
3 2
14 10 11 9
12
2Y
2C3 2OE
13 15
Pin numbers shown are for the D, J, and N packages.
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range, TA: SN54ALS253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C SN74ALS253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS253 MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature 55 4.5 2 0.7 1 12 125 0 NOM 5 MAX 5.5 SN74ALS253 MIN 4.5 2 0.8 2.6 24 70 NOM 5 MAX 5.5 UNIT V V V mA mA °C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH TEST CONDITIONS CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, VCC = 4 5 V 4.5 VCC = 4 5 V 4.5 VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5 5 V 5.5 II = 18 mA IOH = 0.4 mA IOH = 1 mA IOH = 2.6 mA IOL = 12 mA IOL = 24 mA VO = 2.7 V VO = 0.4 V VI = 7 V VI = 2.7 V VI = 0.4 V VO = 2.25 V Outputs high Outputs disabled 20 6.5 7.5 MIN SN54ALS253 TYP MAX 1.5 VCC 2 2.4 VCC 2 3.3 2.4 0.25 0.4 20 20 0.1 20 0.1 112 12 14 30 6.5 7.5 3.2 0.25 0.35 0.4 0.5 20 20 0.1 20 0.1 112 12 14 V µA µA mA µA mA mA mA V MIN SN74ALS253 TYP MAX 1.5 UNIT V
VOL IOZH IOZL II IIH IIL IO§ ICC
All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
switching characteristics (see Figure 1)
VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX SN54ALS253 MIN tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ A or B or Data (any C) OE OE Any Y Any Y Any Y Any Y 5 5 2 3 3 2 2 2 MAX 30 27 15 18 20 19 12 18 SN74ALS253 MIN 5 5 2 3 3 4 2 2 MAX 21 21 10 14 14 16 10 14 ns ns ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN74AS253A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN74AS253A MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature 0 4.5 2 0.8 15 48 70 NOM 5 MAX 5.5 UNIT V V V mA mA °C
4
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
SDAS216A APRIL 1982 REVISED DECEMBER 1994
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH VOL IOZH IOZL II IIH IIL IO ICC A, B All others A, B All others A, B All others TEST CONDITIONS CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, VCC = 4.5 V, VCC = 4.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5 5 V 5.5 V, VCC = 5 5 V 5.5 V, VCC = 5 5 V 5.5 V, VCC = 5.5 V, VCC = 5.5 V II = 18 mA IOH = 2 mA IOH = 15 mA IOL = 48 mA VO = 2.7 V VO = 0.4 V VI = 7 V VI = 2 7 V 2.7 VI = 0 4 V 0.4 VO = 2.25 V Outputs high Outputs low Outputs disabled 30 18 20 21 MIN SN74AS253A TYP MAX 1.2 VCC 2 2.4 3.2 0.35 0.5 50 50 0.2 0.1 40 20 1 0.5 112 29 32 33 mA UNIT V V V µA µA mA µA mA mA
All typical values are at VCC = 5 V, TA = 25°C. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX§ SN74AS253A MIN tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ A or B or Data (any C) OE OE Y Y Any Y Any Y 3 3 2.5 2.5 2 2.5 1 1 MAX 13.5 11.5 7.5 8 12.5 11.5 6 7 ns ns ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
5
Others parts begin by 85
85-1 85-2
|
|
|
