SN75185DW datasheet(8/21 Pages) TI

Il numero della parte	SN75185DW

Spiegazioni elettronici	MULTIPLE RS-232 DRIVERS AND RECEIVERS

PDF	21 Pages

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Produttore elettronici	TI [Texas Instruments]

Homepage	http://www.ti.com

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PARAMETER MEASUREMENT INFORMATION

IOS(L)

−IOS(H)

VDD or GND

VSS or GND

RL = 3 kΩ

−IIL

IIH

Pulse

Generator

(see Note B)

(see Note A)

3 V

0 V

1.5 V

Input

tPHL

tPLH

90%

50%

10%

50%

10%

90%

tTHL

tTLH

VOH

VOL

TEST CIRCUIT

VOLTAGE WAVEFORMS

Input

Output

VT,

IOL

VOH

−IOH

VOL

SN75185

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS181D–DECEMBER 1994–REVISED JANUARY 2006

Figure 1. Driver Test Circuit for VOH,VOL,IOS(H),and IOS(L)

Figure 2. Driver Test Circuit for IIH and IIL

CL includes probe and jig capacitance.

The pulse generator has the following characteristics: tw =25 μs, PRR = 20 kHz, ZO =50 Ω,tr =tf <50ns.

Figure 3. Driver Test Circuit and Voltage Waveforms

Figure 4. Receiver Test Circuit for IOS

Figure 5. Receiver Test Circuit for VT,VOH,and VOL

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