SN65MLVD128

SN65MLVD129

SLLS586 − MARCH 2004

www.ti.com

6

PARAMETER MEASUREMENT INFORMATION

VAB

A

B

IA

VY

VOS

VA + VB

2

VI

D

VCC

IB

II

VB

Figure 1. Driver Voltage and Current Definitions

VAB

49.9

Ω

3.32 k

Ω

3.32 k

Ω

_

+

−1 V

≤ Vtest ≤ 3.4 V

A

B

D

NOTE: All resistors are 1% tolerance.

Figure 2. Differential Output Voltage Test Circuit

VOS

R1

24.9

Ω

A

C3

2.5 pF

VOS(PP)

∆VOS(SS)

VOS(SS)

≈ 1.3 V

B

A

≈ 0.7 V

B

D

R2

24.9

Ω

C1

1 pF

C2

1 pF

NOTES:A. All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1 ns, frequency = 1 MHz,

duty cycle = 50

± 5%.

B. C1, C2 and C3 include instrumentation and fixture capacitance within 2 cm of the D.U.T. and are

±20%.

C. R1 and R2 are metal film, surface mount,

±1%, and located within 2 cm of the D.U.T.

D. The measurement of VOS(PP) is made on test equipment with a −3 dB bandwidth of at least 1 GHz.

Figure 3. Test Circuit and Definitions for the Driver Common-Mode Output Voltage

VTest

+

−

A

B

IOS

0 V or VCC

−1 V or 3.4 V

Figure 4. Driver Short-Circuit Test Circuit