SN74AS250ADWRE4



 
     

 
 
SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994 • • • • SN54AS250A . . . JT PACKAGE SN74AS250A . . . DW OR NT PACKAGE (TOP VIEW) 4-Line to 1-Line Multiplexers That Can Select 1-of-16 Data Inputs Applications: Boolean Function Generator Parallel-to-Serial Converter Data Source Selector Buffered 3-State Bus Driver Inputs Permit Multiplexing From n Lines to One Line Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs E7 E6 E5 E4 E3 E2 E1 E0 OE W D GND description The ′AS250A devices provide full binary decoding to select 1-of-16 data inputs or use sources as an input with an inverting W output. The selected sources are buffered with symmetrical propagation delay times. This reduces the possibility of transients occurring at the output. 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 VCC E8 E9 E10 E11 E12 E13 E14 E15 A B C E5 E6 E7 NC VCC E8 E9 SN54AS250A . . . FK PACKAGE (TOP VIEW) A buffered output-enable (OE) input can be used for n-line to 1-line cascading. Taking OE high places the output in the high-impedance state. In the high-impedance state, the output neither loads nor drives the bus lines significantly. OE does not affect the internal operations of the data selector/multiplexer. New data can be set up while the outputs are disabled. The SN54AS250A is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74AS250A is characterized for operation from 0°C to 70°C. 5 4 3 2 1 28 27 26 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 E10 E11 E12 NC E13 E14 E15 W D GND NC C B A E4 E3 E2 NC E1 E0 OE NC − No internal connection Copyright  1994, Texas Instruments Incorporated     !"#$%&'(!$" !) *+%%,"( ') $# -+./!*'(!$" 0'(,1 %$0+*() *$"#$%& ($ )-,*!#!*'(!$") -,% (2, (,%&) $# ,3') ")(%+&,"() )('"0'%0 4'%%'"(51 %$0+*(!$" -%$*,))!"6 0$,) "$( ",*,))'%!/5 !"*/+0, (,)(!"6 $# '// -'%'&,(,%)1 • DALLAS, TEXAS 75265 • HOUSTON, TEXAS 77251−1443 POST OFFICE BOX 655303 POST OFFICE BOX 1443 1 


 
     

 
 
SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994 logic symbol† FUNCTION TABLE INPUTS OE A B C D Ei OUTPUT W 9 OE L L L L L E0 E0 L H L L L E1 E1 L L H L L E2 E2 B A L H H L L E3 E3 C L L L H L E4 E4 D L H L H L E5 E5 E0 L L H H L E6 E6 E1 L H H H L E7 E7 E2 L L L L H E8 E8 E3 L H L L H E9 E9 E4 L L H L H E10 E10 E5 L H H L H E11 E11 E6 L L L H H E12 E12 L H L H H E13 E13 L L H H H E14 E14 L H H H H E15 E15 H X X X X X Z E7 E8 E9 E10 E11 E12 E13 E14 E15 15 MUX EN 0 14 G 13 11 0 15 3 8 7 6 5 4 10 3 2 1 23 22 21 20 19 18 17 16 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW, JT, and NT packages. 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • W 


 
     

 
 
SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994 logic diagram (positive logic) E0 E1 E2 E3 E4 E5 E6 E7 Data Inputs E8 E9 E10 E11 E12 E13 E14 E15 A 8 7 6 5 4 3 2 1 10 23 W 22 21 20 19 18 17 16 15 A A B 14 B Data Selects B C 13 C C D 11 D D OE Pin numbers shown are for the DW, JT, and NT packages. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 3 


 
     

 
 
SDAS137A − DECEMBER 1983 − 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 Operating free-air temperature range, TA: SN54AS250A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74AS250A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN54AS250A SN74AS250A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 0.8 V High-level output current −12 −15 mA IOL TA Low-level output current 48 mA 70 °C High-level input voltage 2 2 V 32 Operating free-air temperature −55 125 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK SN54AS250A TYP‡ MAX TEST CONDITIONS MIN VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = − 18 mA IOH = − 2 mA VCC = 4.5 V IOH = − 12 mA IOH = − 15 mA VOL VCC = 4.5 V IOL = 32 mA IOL = 48 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO§ VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VO = 2.25 V VOH ICC VCC = 5.5 V SN74AS250A TYP‡ MAX MIN −1.2 VCC − 2 2.4 −1.2 UNIT V VCC − 2 3.3 V 2.4 0.35 3.3 0.5 0.35 −30 0.5 V 50 50 µA −50 −50 µA 0.1 0.1 mA 20 20 µA −0.5 −0.5 mA −112 mA −112 −30 Outputs high 26 42 26 42 Outputs low 31 50 31 50 mA Outputs disabled 30 48 30 48 ‡ 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. 4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 


 
     

 
 
SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL Data W tPLH tPHL A, B, C, D W tPZH tPZL OE W tPHZ tPLZ OE W VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† SN54AS250A SN74AS250A MIN MAX MIN MAX 2 9.5 2 8 2 8.5 2 7 4 15.5 4 13 4 12 4 10.5 2 7.5 2 7 2 10 2 9 1.5 6.5 1.5 6 2 8.5 2 6.5 UNIT ns ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 5 


 
     

 
 
SDAS137A − DECEMBER 1983 − REVISED DECEMBER 1994 PARAMETER MEASUREMENT INFORMATION SERIES 54ALS/74ALS AND 54AS/74AS DEVICES 7V RL = R1 = R2 VCC S1 RL R1 Test Point From Output Under Test CL (see Note A) From Output Under Test RL Test Point CL (see Note A) CL (see Note A) LOAD CIRCUIT FOR BI-STATE TOTEM-POLE OUTPUTS LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS 3.5 V Timing Input Test Point From Output Under Test LOAD CIRCUIT FOR 3-STATE OUTPUTS 3.5 V High-Level Pulse 1.3 V R2 1.3 V 1.3 V 0.3 V 0.3 V tsu Data Input tw th 3.5 V 1.3 V 3.5 V Low-Level Pulse 1.3 V 0.3 V 1.3 V 0.3 V VOLTAGE WAVEFORMS PULSE DURATIONS VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3.5 V Output Control (low-level enabling) 1.3 V 1.3 V 0.3 V tPZL Waveform 1 S1 Closed (see Note B) tPLZ 3.5 V Input tPZH 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output VOL 0.3 V 1.3 V 1.3 V VOL tPLH tPHL VOH 1.3 V 1.3 V [3.5 V 1.3 V tPHZ Waveform 2 S1 Open (see Note B) 1.3 V VOH Out-of-Phase Output (see Note C) 0.3 V [0 V 1.3 V 1.3 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. When measuring propagation delay items of 3-state outputs, switch S1 is open. D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%. E. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms 6 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • PACKAGE OPTION ADDENDUM www.ti.com 12-Apr-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking (4/5) (6) 5962-9056201LA ACTIVE CDIP JT 24 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9056201LA SNJ54AS250AJT SNJ54AS250AJT ACTIVE CDIP JT 24 1 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 5962-9056201LA SNJ54AS250AJT (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of