DS36950 datasheet(3/12 Pages) NSC

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Electrical Characteristics (Note 2) (Continued)

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified

Symbol

Parameter

Conditions

Min

Typ

Max

Units

DRIVER AND RECEIVER CHARACTERISTICS

Enable Input Clamp Voltage

I = −18 mA

−1.5

Line Input Current

Other Input = 0V

I = +12V

0.5

(Note 8)

I = −7V

−0.45

−0.8

Enable Input Current High

OH = 2.4V

RE4 or DE

µA

REC

µA

Enable Input Current Low

OL = 0.4V

RE4 or DE

−20

µA

REC

−60

µA

Supply Current (Note 10)

No Load, Outputs Enabled

CCZ

Supply Current (Note 10)

No Load, Outputs Disabled

Switching Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified

Symbol

Conditions

Min

Typ

Max

Units

DRIVER SINGLE-ENDED CHARACTERISTICS

PZH

L = 110

Ω (Figure 4)35

PZL

L = 110

Ω (Figure 5)25

PHZ

L = 110

Ω (Figure 4)15

PLZ

L = 110

Ω (Figure 5)35

DRIVER DIFFERENTIAL CHARACTERISTICS

R,tF

Rise & Fall Time

L =54

Ω

PLHD

Differential Propagation

L = 50 pF

PHLD

Delays (Note 15)

D = 15 pF

SKD

PLHD −tPHLD| Differential Skew

(Figures 3, 8)3

RECEIVER CHARACTERISTICS

PLHD

Differential Propagation Delays

PHLD

L = 15 pF, VCM = 1.5V (Figure 6)

SKD

PLHD −tPHLD| Differential Receiver Skew

Output Enable Time to High Level

Output Enable Time to Low Level

L =15pF

Output Disable Time from High Level

(Figure 7)10

Output Disable Time from Low Level

Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices

should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.

Note 2: Current into device pins is define as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise

specified.

Note 3: IIH and IIL includes driver input current and receiver TRI-STATE leakage current.

Note 4:

∆IVODI and ∆IVOCI are changes in magnitude of VOD and VOC, respectively, that occur when the input changes state.

Note 5: In EIA Standards EIA-422 and EIA-485, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage, VOS.

Note 6: Threshold parameter limits specified as an algebraic value rather than by magnitude.

Note 7: Hysteresis defined as VHST =VTH −VTL.

Note 8: IIN includes the receiver input current and driver TRI-STATE leakage current.

Note 9: Short one output at a time.

Note 10: Total package supply current.

Note 11: All typicals are given for VCC = 5.0V and TA = 25˚C.

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