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SN75LBC241DW Datasheet(PDF) 6 Page - Texas Instruments |
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SN75LBC241DW Datasheet(HTML) 6 Page - Texas Instruments |
6 / 8 page SN75LBC241 LOW-POWER LinBiCMOS ™ MULTIPLE DRIVERS AND RECEIVERS SLLS137E – MAY 1992 – REVISED JANUARY 1999 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION TEST CIRCUIT VOLTAGE WAVEFORMS CL = 50 pF (see Note B) RL = 1.3 kΩ 0 V 3 V Output Input VOL VOH tPHL(R) Generator (see Note A) tPLH(R) 500 ns ≤10 ns ≤10 ns VCC NOTES: A. The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%. B. CL includes probe and jig capacitance. C. All diodes are 1N3064 or equivalent. RIN ROUT See Note C 90% 90% 50% 50% 10% 10% 1.5 V 1.5 V Figure 2. Receiver Test Circuit and Waveforms for tPHL and tPLH Measurement CL = 10 pF (see Note B) TEST CIRCUIT VOLTAGE WAVEFORMS Output VOL VOH tPHL tTLH Generator (see Note A) RL RS-232 Output tPLH tTHL 5 µs 0 V NOTES: A. The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%. B. CL includes probe and jig capacitance. TIN TOUT 3 V Input ≤10 ns ≤10 ns 90% 90% 50% 50% 10% 10% 90% 90% 10% 10% Figure 3. Driver Test Circuit and Waveforms for tPHL and tPLH Measurement (5-µs Input) NOTES: A. The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%. B. CL includes probe and jig capacitance. SR + 6V t THL or tTLH CL (see Note B) TEST CIRCUIT Generator (see Note A) RL RS-232 Output VOLTAGE WAVEFORMS 0 V 3 V Output Input VOL VOH tTHL tTLH 20 µs ≤10 ns ≤10 ns 90% 90% 1.5 V 1.5 V 10% 10% –3 V –3 V 3 V 3 V Figure 4. Test Circuit and Waveforms for tTHL and tTLH Measurement (20-µs Input) |
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