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) 1OE B 1C3 1C2 1C1 1C0 1Y GND 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. 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 2OE A 2C3 2C2 2C1 2C0 2Y B 1OE NC VCC 2OE SN54ALS253 . . . FK PACKAGE (TOP VIEW) 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. 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 A 2C3 NC 2C2 2C1 1Y GND NC 2Y 2C0 1C3 1C2 NC 1C1 1C0 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. NC – No internal connection FUNCTION TABLE INPUTS SELECT† DATA OE OUTPUT Y Z B A C0 C1 C2 C3 X X X X X X H L L L X X X L L L L H X X X L H L H X L X X L L L H X H X X L H H L X X L X L L H L X X H X L H H H X X X L L L H H X X X H L † Select inputs A and B are common to both sections. H Copyright 1994, Texas Instruments Incorporated 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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 1OE 1C0 1C1 1C2 1C3 2OE 2C0 2C1 2C2 2C3 14 2 0 1 1 6 5 4 3 EN G 0 3 MUX 0 7 1 1Y 2 3 15 10 9 11 2Y 12 13 † 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 1C1 1 6 5 7 Data 1 1C2 1C3 B 1Y 4 3 2 Select A 2C0 2C1 Data 2 2C2 2C3 2OE 14 10 11 9 12 13 15 Pin numbers shown are for the D, J, and N packages. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2Y 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 SN74ALS253 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 0.7 0.8 High-level output current –1 – 2.6 mA IOL TA Low-level output current 12 24 mA 70 °C High-level input voltage 2 Operating free-air temperature 2 – 55 125 V V 0 V electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = – 18 mA IOH = – 0.4 mA VCC = 4 4.5 5V IOH = – 1 mA IOH = – 2.6 mA VOL 5V VCC = 4 4.5 IOL = 12 mA IOL = 24 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 5.5 5V SN54ALS253 TYP‡ MAX MIN SN74ALS253 TYP‡ MAX MIN – 1.5 VCC – 2 2.4 – 1.5 UNIT V VCC – 2 V 3.3 2.4 0.25 – 20 0.4 3.2 0.25 0.4 0.35 0.5 V µA 20 20 – 20 – 20 µA 0.1 0.1 mA 20 20 µA – 0.1 – 0.1 mA – 112 mA – 112 – 30 Outputs high 6.5 12 6.5 12 Outputs disabled 7.5 14 7.5 14 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. 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) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† SN54ALS253 tPLH tPHL A or B Any Y tPLH tPHL Data (any C) Any Y tPZH tPZL OE Any Y tPHZ tPLZ OE Any Y UNIT SN74ALS253 MIN MAX MIN MAX 5 30 5 21 5 27 5 21 2 15 2 10 3 18 3 14 3 20 3 14 2 19 4 16 2 12 2 10 2 18 2 14 ns ns ns ns † 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 VCC VIH Supply voltage VIL IOH Low-level input voltage IOL TA Low-level output current 4 High-level input voltage MIN NOM MAX 4.5 5 5.5 2 High-level output current Operating free-air temperature 0 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT V V 0.8 V – 15 mA 48 mA 70 °C 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 A, B All others A, B All others A, B All others IO‡ ICC SN74AS253A 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, VCC = 4.5 V, IOH = – 15 mA IOL = 48 mA VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V VCC = 5 5.5 5V V, VI = 7 V 5V VCC = 5 5.5 V, 7V VI = 2 2.7 VCC = 5 5.5 5V V, VI = 0 0.4 4V VCC = 5.5 V, VO = 2.25 V Outputs high VCC = 5.5 V – 1.2 VCC – 2 2.4 V V 3.2 0.35 0.5 V 50 µA – 50 µA 0.2 0.1 40 20 –1 – 0.5 – 30 UNIT – 112 18 29 Outputs low 20 32 Outputs disabled 21 33 mA µA mA 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) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B Y tPLH tPHL Data (any C) Y tPZH tPZL OE Any Y tPHZ tPLZ OE Any Y VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX§ SN74AS253A MIN MAX 3 13.5 3 11.5 2.5 7.5 2.5 8 2 12.5 2.5 11.5 1 6 1 7 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 5 SN54ALS253, SN74ALS253, SN74AS253A DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS216A – APRIL 1982 – 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 From Output Under Test 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 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 Data Input tw th tsu 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 SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATIONS 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 1.3 V tPHZ tPZH Waveform 2 S1 Open (see Note B) 1.3 V VOL 0.3 V VOH 1.3 V 0.3 V [0 V 3.5 V 1.3 V Input 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output 1.3 V 1.3 V VOL tPLH tPHL VOH Out-of-Phase Output (see Note C) 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 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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