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| N8T13, N8T23, SN75123 DUAL LINE DRIVERS SLLS086B - SEPTEMBER 1973 - REVISED MAY 1995 * * * * * * * * * Meet or Exceed the Requirements of IBMTM System 360 Input/Output Interface Specification Operate From Single 5-V Supply TTL Compatible 3.11-V Output at IOH = - 59.3 mA Uncommitted Emitter-Follower Output Structure for Party-Line Operation Short-Circuit Protection AND-OR Logic Configuration Designed for Use With Triple Line Receiver SN75124 Designed to Be Interchangeable With Signetics N8T13 and N8T23 D OR N PACKAGE (TOP VIEW) 1A 1B 1C 1D 1E 1F 1Y GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC 2F 2E 2D 2C 2B 2A 2Y FUNCTION TABLE INPUTS A B C D E F OUTPUT Y description The N8T13, N8T23, and SN75123 are dual line drivers specifically designed to meet the input/ output interface specifications for IBM System 360. It is also compatible with standard-TTL logic and supply-voltage levels. The N8T13, N8T23, and SN75123 low-impedance emitter-follower outputs drive terminated lines such as coaxial cable or twisted pair. Having the outputs uncommitted allows wired-OR logic to be performed in party-line applications. Output short-circuit protection is provided by an internal clamping network that turns on when the output voltage drops below approximately 1.5 V. All the inputs are in conventional TTL configuration, and the gating can be used during power-up and power-down sequences to ensure that no noise is introduced to the line. The N8T13, N8T23, and SN75123 are characterized for operation from 0C to 70C. HH H HX X H XX X XH H H L All other input combinations H = high level, L = low level, X = irrelevant logic symbol 1A 1B 1C 1D 1E 1F 2A 2B 2C 2D 2E 2F 1 2 3 4 5 6 10 11 12 13 14 15 & 1 7 1Y & 9 2Y This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) A B C D E F Y THE SN751730 IS RECOMMENDED FOR NEW IBM 360/370 INTERFACE DESIGNS. IBM is a trademark of International Business Machines Corp. 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 (c) 1995, Texas Instruments Incorporated POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 2-1 N8T13, N8T23, SN75123 DUAL LINE DRIVERS SLLS086B - SEPTEMBER 1973 - REVISED MAY 1995 schematic (each driver) VCC 16 4 k 4 k 360 15 To Other Line Driver A B C D E F 1, 10 2, 11 3, 12 4, 13 5, 14 6, 15 7, 9 Y 8 GND To Other Line Driver Resistor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Output voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Continuous total dissipation at (or below) 25C free-air temperature (see Note 2): D package . . . . 950 mW N package . . . 1150 mW Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C 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. All voltage values, except differential input voltage, are with respect to network ground terminal. 2. For operation above 25C free-air temperature, derate the D package to 608 mW at 70C at the rate of 7.6 mW/C and the N package to 736 mW at 70C at the rate of 9.2 mW/C. recommended operating conditions MIN Supply voltage, VCC High-level input voltage, VIH Low-level input voltage, VIL High-level output current, IOH Operating free-air temperature, TA 0 4.75 2 0.8 - 100 70 NOM 5 MAX 5.25 UNIT V V V mA C 2-2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 N8T13, N8T23, SN75123 DUAL LINE DRIVERS SLLS086B - SEPTEMBER 1973 - REVISED MAY 1995 electrical characteristics, VCC = 4.75 V to 5.25 V, TA = 0C to 70C (unless otherwise noted) PARAMETER VIK VI(BR) VOH VOL IOH IO(off) IIH IIL IOS Input clamp voltage Input breakdown voltage High-level High level output voltage Low-level output voltage High-level High level output current Off-state output current High-level input current Low-level input current Short-circuit output current VCC = 5 V, VCC = 5 V, VCC = 5 V, , IOH = - 59.3 mA, VIL = 0.8 V, , VCC = 5 V, TA = 25C, VCC = 0, VI = 4.5 V VI = 0.4 V VCC = 5 V, TEST CONDITIONS II = - 12 mA II = 10 mA VIH = 2 V, , See Note 3 IOL = - 240 A, , VIH = 4.5 V, See Note 3 VO = 3 V - 0.1 TA = 25C TA = 0C to 70C See Note 3 , VOH = 2 V, - 100 MIN 5.5 3.11 2.9 0.15 - 250 40 40 - 1.6 MAX - 1.5 UNIT V V V V mA A A mA TA = 25C - 30 mA ICCH Supply current, outputs high VCC = 5.25 V, All inputs at 2 V, Outputs open 28 mA ICCL Supply current, outputs low VCC = 5.25 V, All inputs at 0.8 V, Outputs open 60 mA Not more than one output should be shorted at a time. NOTE 3: The output voltage and current limits are valid for any appropriate combination of high and low inputs specified by the function table for the desired output. switching characteristics, VCC = 5 V, TA = 25C PARAMETER tPLH tPHL tPLH tPHL Propagation delay time, low- to high-level output Propagation delay time, high- to low-level output Propagation delay time, low- to high-level output Propagation delay time, high- to low-level output RL = 50 , RL = 50 , TEST CONDITIONS CL = 15 pF pF, CL = 100 pF pF, See Figure 1 See Figure 1 MIN TYP 12 12 20 15 MAX 20 20 35 25 UNIT ns ns PARAMETER MEASUREMENT INFORMATION 3V Pulse Generator (see Note A) RL = 50 CL (see Note B) Output 1.5 V 1.5 V VOL TEST CIRCUIT VOLTAGE WAVEFORMS VCC Input 10% Output tPLH 5 ns 90% 1.5 V 90% 1.5 V 10% tPHL VOH 5 ns 3V 0V NOTES: A. The pulse generator has the following characteristics: ZO = 50 ; tw = 200 ns, duty cycle = 50%. B. CL Includes probe and jig capacitance. Figure 1. Test Circuit and Voltage Waveforms POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 2-3 N8T13, N8T23, SN75123 DUAL LINE DRIVERS SLLS086B - SEPTEMBER 1973 - REVISED MAY 1995 TYPICAL CHARACTERISTICS OUTPUT CURRENT vs OUTPUT VOLTAGE - 250 I O - Output Current - mA - 200 - 150 - 100 - 50 0 0 1 2 3 4 VO - Output Voltage - V 5 A B C D E F 1/2 '13, '23 95 Figure 3. Unbalanced Line Communication Using '13, '23, and '124 2-4 IIIII IIIII IIIIII IIIII IIIII VCC = 5 V All inputs at 2 V TA = 25C - 300 Figure 2 APPLICATION INFORMATION 95- Coaxial Cable 95 Strobe A B 1/3 SN75124 Y POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current and complete. TI warrants performance of its semiconductor products and related software to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage ("Critical Applications"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. Inclusion of TI products in such applications is understood to be fully at the risk of the customer. Use of TI products in such applications requires the written approval of an appropriate TI officer. Questions concerning potential risk applications should be directed to TI through a local SC sales office. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards should be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Nor does TI warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. Copyright (c) 1998, Texas Instruments Incorporated |
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