SN75ALS056, SN75ALS057

TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS

SLLS028G – AUGUST 1987 – REVISED JUNE 1998

13

POST OFFICE BOX 655303

TEST CIRCUIT

VOLTAGE WAVEFORMS

tPHL4

1.55 V

1.5 V

VO(An, Rn)

VI(Bn)

VOL

VOH

1 V

2 V

1.5 V

tPLH4

1.55 V

CL (includes jig capacitance)

(An,Rn)

VO

5 V

VI(Bn)

RL2

RL1

SN75ALS056

or

SN75ALS057

NOTE A: tr = tf ≤ 5 ns from 10% to 90%

Figure 4. Receiver Test Circuit and Voltage Waveforms

TEST CIRCUIT

VOLTAGE WAVEFORMS

tPZH2

tPZL2

1.5 V

1.5 V

1.5 V

0.5 V

0.5 V

tPLZ2

tPHZ2

1.5 V

0

3 V

VO(An, Rn)

VL

RL1

RL2

CL (includes jig capacitance)

(An,Rn)

VO

VI(CS, RE)

SN75ALS056

or

SN75ALS057

VO(An, Rn)

VI(CS, RE)

NOTE A: tr = tf ≤ 5 ns from 10% to 90%

Figure 5. Propagation Delay From CS to An or RE to Rn Test Circuit and Voltage Waveforms