SDLS965 − OCTOBER 2004 D Single 5-V Supply D ±100-mV Sensitivity D For Application as: D D D D D D D PACKAGE (TOP VIEW) 1OUT COMSTRB 1LINE GND − Single-Ended Line Receiver − Gated Oscillator − Level Comparator Adjustable Reference Voltage TTL Outputs TTL-Compatible Strobe Designed for Party-Line (Data-Bus) Applications Common Reference-Voltage Pin Common Strobe 1 8 2 7 3 6 4 5 VCC 2OUT COMREF 2LINE description/ordering information This device consists of a dual single-ended line receiver with TTL-compatible strobes and outputs. The reference voltage (switching threshold) is applied externally and can be adjusted from 1.5 V to 3.4 V, making it possible to optimize noise immunity for a given system design. Due to the low input current (less than 100 µA), the device is suited ideally for party-line (data-bus) systems. The SN74LS2323 has a common reference-voltage pin and a common strobe. ORDERING INFORMATION 0°C to 70°C ORDERABLE PART NUMBER PACKAGE† TA SOIC − D Tube SN74LS2323D Tape and reel SN74LS2323DR TOP-SIDE MARKING LS2323 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each receiver) LINE INPUT STROBE OUTPUT ≤(VREF − 100 mV) ≥(VREF + 100 mV) L H X L X H L H = high level, L = low level, X = irrelevant Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2004, Texas Instruments Incorporated !" #$ # % & ## '($ # ) # "( "# ) "" $ POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SDLS965 − OCTOBER 2004 logic diagram (positive logic) COMSTRB 1LINE COMREF 2LINE 2 1 1OUT 3 + _ 6 7 5 2OUT + _ schematic (each receiver) VCC VCC 3.5 kΩ VCC VCC VCC VCC 3 kΩ 5.5 kΩ 6 kΩ Line VCC VCC 50 Ω 10 kΩ 2.5 kΩ OUT 1.8 kΩ VREF 1.8 kΩ 20 kΩ 750 Ω VCC 15 kΩ VCC 25 kΩ COMSTRB 2 VCC POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1.5 kΩ SDLS965 − OCTOBER 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Reference input voltage, VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Line input voltage range with respect to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −2 V to 7 V Line input voltage with respect to VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5 V Strobe input voltage, VI(S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Package thermal impedance, θJA (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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. NOTES: 1. Unless otherwise specified, voltage values are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions MIN NOM MAX 5 5.5 ‡ V V °C VCC Vref Supply voltage 4.5 Reference input voltage 1.8 VI(L) VI(S) High-level line input voltage 0 High-level strobe input voltage 0 VCC − 1 7 0 70 TA Operating free-air temperature range ‡ Max = VCC−1.5 V u VREF t 3.4 V POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT V V 3 SDLS965 − OCTOBER 2004 electrical characteristics over recommended operating VCC = 5 V ±10%, VREF = 1.5 V to 3.5 V (unless otherwise noted) PARAMETER VIH(L) VIL(L) VIH(S) VIL(S) VOH VOL IIH(S) IIH(L) Low-level line input voltage High-level output control input voltage Low-level output control input voltage Low-level output voltage High-level input current High-level input current range, MIN MAX UNIT VI(S) = 0.8 V, IOL = 12 mA, VREF = 2.5 V, VOL ≤ 0.6 V VCC = 4.5 V 2.62 6 VI(S) = 0.8 V, IOL = 16 mA, VREF = 3.4 V, VOL ≤ 0.5 V VCC = 5.5 V 3.5 7 VI(S) = 0.8 V, IOH = −0.4 mA,VREF = 2.5 V, VOH ≥ 2 V VCC = 4.5 V −2 2.38 VI(S) = 0.8 V, IOH = −0.4 mA,VREF = 3.4 V, VOH ≥ 3.2 V VCC = 5.5 V −2 3.3 VI(L) = 1.8 V, VREF = 2.5 V, VO ≤ 0.4 V VI(L) = 1.8 V, VREF = 2.5 V, VO ≥ 2.4 V VCC = 4.5 V VCC = 4.5 V 2 VCC = 4.5 V VCC = 5 V 2 VI(L) = 1.4 V, VI(S) = 0.8 V, IOH = −1 mA, VREF = 2.5 V VI(L) = 3.8 V, VI(S) = 0.8 V, VREF = 2.5 V VI(L) = 3.8 V, VREF = 2.5 V VI(S) = 2.4 V, VREF = 2.5 V V V VCC = 5.5 V VCC = 4.5 V, IOL = 16 mA V 0.8 2.7 V V 2.7 0.6 VCC = 5 V, IOL = 24 mA 0.5 VCC = 5.5 V, IOL = 24 mA 0.5 VCC = 5.5 V, VI(S) = 2.4 V 20 VCC = 5.5 V, VI(S) = 7 V 100 VCC = 5 V, VI(L) = 5 V 100 µA VCC = 5 V, VI(L) = 5.5 V 2 mA V µA A IIH(REF) High-level input current VI(S) = 2.4 V, VREF = 3.4 V VCC = 5.5 V, VI(L) = 2.5 V 500 µA IIL(S) Low-level input current VI(L) = 1.8 V, VREF = 0.1 V VCC = 5.5 V, VI(S) = 0.4 V −400 µA IIL(L) Low-level input current at Line input VI(L) = 0.1 V, VREF = 1.8 V VCC = 5.5 V, VI(S) = 0.4 V −100 µA IIL(REF) Low-level input current at REF pin VI(L) = 1.8 V, VREF = 0.1 V VCC = 5.5 V, VI(S) = 0.4 V −100 µA IOS Short-circuit output current‡ VI(L) = 1.8 V, VREF = 2.8 V VCC = 5.5 V VI(S) = 0.4 V −130 mA ICCH Supply current, output high VI(S) = 0, VCC = 5.5 V VI(L) = VREF − 100 mV 12 mA ICCL Supply current, output low VI(S) = 0, VCC = 5.5 V VI(L) = VREF + 100 mV 16 mA † Only one output should be shorted at a time, and duration of the short circuit should not exceed one second. 4 temperature TEST CONDITIONS High-level line input voltage High-level output voltage free-air POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 −30 SDLS965 − OCTOBER 2004 switching characteristics, VCC = 5 V ±10%, VREF = 2.5 V, TA = 0°C to 70°C PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT tPLH(L) Propagation delay time, low- to high-level output from LINE CL = 50 pF, RL = 500 Ω, See Figure 1 10 25 35 ns tPHL(L) Propagation delay time, high- to low-level output from LINE CL = 50 pF, RL = 500 Ω, See Figure 1 10 25 35 ns tPLH(S) Propagation delay time, low- to high-level output from COMSTRB CL = 50 pF, RL = 500 Ω, See Figure 1 11 22 ns tPHL(S) Propagation delay time, high- to low-level output from COMSTRB CL = 50 pF, RL = 500 Ω, See Figure 1 8 15 ns † All typical values are at VCC = 5 V, TA = 25°C. PARAMETER MEASUREMENT INFORMATION T.P. 3V VCC 500 W 2.5 V LINE 2V D.U.T. 3V ÎÎÎ COMSTRB CL = 50 pF 1.5 V 1.5 V tPHL(L) 0V tPHL(S) tPLH(L) VOH OUTPUT VOL 0.8 V 2V 0.8 V tPLH(S) 2V VOLTAGE WAVEFORMS TEST CIRCUIT NOTES: A. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, tr and tf ≤ 2 ns, and duty cycle = 50%. B. CL includes probe and jig capacitance. C. All diodes are 1N914 (or equivalent). D. The outputs are measured one at a time, with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE MATERIALS INFORMATION www.ti.com 4-Oct-2007 TAPE AND REEL BOX INFORMATION Device SN74LS2323DR Package Pins D 8 Site Reel Diameter (mm) Reel Width (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) SITE 27 330 12 6.4 5.2 2.1 8 Pack Materials-Page 1 W Pin1 (mm) Quadrant 12 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 4-Oct-2007 Device Package Pins Site Length (mm) Width (mm) Height (mm) SN74LS2323DR D 8 SITE 27 342.9 336.6 20.64 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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