MC75172B 查看數據表（PDF） - Motorola => Freescale

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MC75172B

Quad EIA−485 Line Drivers with Three−State Outputs

Motorola => Freescale 

MC75172B MC75174B

p p p p ELECTRICAL CHARACTERISTICS (–40°C TA 85°C, 4.75 V VCC 5.25 V, unless otherwise noted.)

Characteristics

Symbol

Min

Typ

Max

Unit

Inputs

Low Level Voltage (Pins 4 & 12, MC75174B only)

Low Level Voltage (All Other Pins)

High Level Voltage (All Inputs)

Current @ Vin = 2.7 V (All Inputs)

Current @ Vin = 0.5 V (All Inputs)

VIL(A)

0

VIL(B)

0

VIH

2.0

Vdc

–

0.7

–

0.8

–

VCC

IIH

–

0.2

20

µA

IIL

–100

–15

–

Clamp Voltage (All Inputs, Iin = –18 mA)

Thermal Shutdown Junction Temperature

Power Supply Current (Outputs Open, VCC = 5.25 V)

Outputs Enable

Outputs Disabled

VIK

–1.5

–

–

Vdc

Tjts

–

+150

–

°C

ICC

mA

–

60

70

–

30

40

TIMING CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)

Characteristics

Propagation Delay – Input to Single–ended Output (Figure 3)

Output Low–to–High

Output High–to–Low

Propagation Delay – Input to Differential Output (Figure 4)

Input Low–to–High

Input High–to–Low

Differential Output Transition Time (Figure 4)

Skew Timing

tPLHD – tPHLD  for Each Driver

Max – Min tPLHD Within a Package

Max – Min tPHLD Within a Package

Enable Timing

Single–ended Outputs (Figure 5)

Enable to Active High Output

Enable to Active Low Output

Active High to Disable (using Enable)

Active Low to Disable (using Enable)

Enable to Active High Output (MC75172B only)

Enable to Active Low Output (MC75172B only)

Active High to Disable (using Enable, MC75172B only)

Active Low to Disable (using Enable, MC75172B only)

Differential Outputs (Figure 6)

Enable to Active Output

Enable to Active Output (MC75172B only)

Enable to 3–State Output

Enable to 3–State Output (MC75172B only)

Symbol

Min

Typ

Max

Unit

tPLH

tPHL

ns

–

23

30

–

18

30

tPLH(D)

–

tPHL(D)

–

ns

15

25

17

25

tdr, tdf

–

19

25

ns

tSK1

tSK2

tSK3

ns

–

0.2

–

–

1.5

–

–

1.5

–

ns

tPZH(E)

–

tPZL(E)

–

tPHZ(E)

–

tPLZ(E)

–

tPZH(E)

–

tPZL(E)

–

tPHZ(E)

–

tPLZ(E)

–

tPZD(E)

–

tPZD(E)

–

tPDZ(E)

–

tPDZ(E)

–

48

60

20

30

35

45

30

50

58

70

28

35

38

50

36

50

ns

47

–

56

–

32

–

40

–

MOTOROLA ANALOG IC DEVICE DATA

3

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