MC26C32 データシートの表示（PDF） - Motorola => Freescale

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MC26C32

Quad EIA-422-A Line Receiver

Motorola => Freescale 

AC CHARACTERISTICS (VCC = 4.5 to 5.5 V, TA = – 40 to + 85°C, unless otherwise stated)

Parameter

Symbol

Min

Typ

Propagation Delay Input to Output, CL = 50 pF, VDIFF = 2.5 V

tPLH

—

18

tPHL

Skew = tPHL – tPLH

Propagation Delay Enable to Output

CL = 50 pF, RL = 1000 Ω, VDIFF = 2.5 V

Skew

—

1

tPLZ

—

12

tPHZ

Propagation Delay Enable to Output

CL = 50 pF, RL = 1000 Ω, VDIFF = 2.5 V

tPZL

—

14

tPZH

* Skew: difference in propagation delays between complementary outputs.

AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS

Max

Unit

30

ns

—

ns

—

ns

—

ns

TEST

POINT

OUTPUT

CL = 49 pF

4.9 kΩ

VCC

S1 RL = 2 kΩ

S2

Figure 1. Test Circuit

+ 2.5 V —

INPUT

– 2.5 V

OUTPUT

0V

0V

tPLH

tPHL

1.3 V

1.3 V

S1 AND S2 CLOSED

Figure 2. Propagation Delays

3V—

ENABLE INPUT

0V

1.3 V

tPZH

OUTPUT A

50%

S1 OPEN

S2 CLOSED

OUTPUT B

tPZL

50% S1 CLOSED

S2 OPEN

1.3 V

tPHZ

S1 CLOSED

S2 CLOSED

tPLZ

S1 CLOSED

S2 CLOSED

0.5 V

VOL

VOH

0.5 V

Figure 3. Enable and Disable Times

ENABLE

DATA

TYPICAL APPLICATIONS

+

–

DATA

OUTPUT

Figure 4. Two–Wire Balanced Systems (EIA–422–A)

MOTOROLA

MC26C32

3

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