SN54AS760, SN74ALS760, SN74AS760 OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995 • • • • Open-Collector Outputs Drive Bus Lines or Buffer Memory Address Registers Eliminates the Need for 3-State Overlap Protection pnp Inputs Reduce dc Loading Open-Collector Versions of ′ALS244 and ′AS244 Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs SN54AS760 . . . J PACKAGE SN74ALS760, SN74AS760 . . . DW OR N PACKAGE (TOP VIEW) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND description The SN54AS760 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74ALS760 and SN74AS760 are characterized for operation from 0°C to 70°C. 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 2Y4 1A1 1OE VCC SN54AS760 . . . FK PACKAGE (TOP VIEW) 1A2 2Y3 1A3 2Y2 1A4 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters by eliminating the need for 3-state overlap protection. With the ′AS756 and SN74AS757, these devices provide the choice of selected combinations of inverting outputs, symmetrical active-low output-enable (OE) inputs, and complementary OE and OE inputs. 1 2OE • Copyright 1995, 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 SN54AS760, SN74ALS760, SN74AS760 OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995 logic symbol† 1OE 1A1 1A2 1A3 1A4 1 logic diagram (positive logic) 1OE 2 18 4 16 6 14 8 12 1Y1 1A1 2OE 1Y3 1A2 2A2 2A3 2A4 18 4 16 6 14 8 12 1Y1 1Y2 1Y4 1Y3 EN 1A4 2A1 2 1Y2 1A3 19 1 EN 11 9 13 7 15 5 17 3 1Y4 2Y1 2Y2 2Y3 2OE 19 2Y4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A1 2A2 2A3 2A4 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN74ALS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 SN74ALS760 MIN NOM MAX 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL VOH Low-level input voltage 0.8 V High-level output voltage 5.5 V IOL TA Low-level output current 24 mA 70 °C 2 High-level input voltage 2 Operating free-air temperature 0 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V V SN54AS760, SN74ALS760, SN74AS760 OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER SN74ALS760 TYP† MAX TEST CONDITIONS MIN VIK IOH VCC = 4.5 V, VCC = 4.5 V, II = – 18 mA VOH = 5.5 V IOL 5V VCC = 4 4.5 IOL = 12 mA IOL = 24 mA II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL VCC = 5.5 V, VI = 0.4 V Outputs high 9 15 Outputs low 15 19 VCC = 5 5.5 5V ICC – 1.5 0.1 0.25 0.4 0.35 0.5 UNIT V mA V 0.1 mA 20 µA – 0.1 mA mA † All typical values are at VCC = 5 V, TA = 25°C. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX‡ UNIT SN74ALS760 tPLH tPHL A Y tPLH tPHL OE Y MIN MAX 5 15 5 12 5 16 5 13 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 Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN54AS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74AS760 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54AS760, SN74ALS760, SN74AS760 OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995 recommended operating conditions SN54AS760 SN74AS760 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL VOH Low-level input voltage 0.8 0.8 High-level output voltage 5.5 5.5 V IOL TA Low-level output current 48 64 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 IOH SN54AS760 TYP† MAX TEST CONDITIONS MIN SN74AS760 TYP† MAX MIN VCC = 4.5 V, VCC = 4.5 V, II = – 18 mA VOH = 5.5 V – 1.2 – 1.2 0.1 0.1 VOL VCC = 4 4.5 5V IOL = 48 mA IOL = 64 mA 0.55 II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V VCC = 5 5.5 5V V, VI = 0 0.4 4V IIL OE A ICC VCC = 5 5.5 5V 0.55 UNIT V mA V 0.1 0.1 mA 20 20 µA – 0.5 – 0.5 –1 –1 Outputs high 20 32 20 32 Outputs low 60 94 60 94 mA mA † All typical values are at VCC = 5 V, TA = 25°C. switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX‡ SN54AS760 tPLH tPHL A Y tPLH tPHL OE Y SN74AS760 MIN MAX MIN MAX 3 19.5 3 18.5 1 7 1 6 3 19.5 3 18.5 1 8 1 7 ‡ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT ns ns SN54AS760, SN74ALS760, SN74AS760 OCTAL BUFFERS AND LINE DRIVERS WITH OPEN-COLLECTOR OUTPUTS SDAS141A – DECEMBER 1983 – REVISED JANUARY 1995 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 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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