SCN68681C1A44 查看數據表（PDF） - Philips Electronics

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SCN68681C1A44

Dual asynchronous receiver/transmitter (DUART)

Philips Electronics 

Philips Semiconductors

Dual asynchronous receiver/transmitter (DUART)

Product specification

SCN68681

DC ELECTRICAL CHARACTERISTICS TA = -40°C to +85°C, VCC = 5.0V ± 10%1, 2, 3

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

Min Typ Max

UNIT

VIL

Input low voltage

VIH

Input high voltage (except X1/CLK)5

VIH

Input high voltage (except X1/CLK)4

VIH

Input high voltage (X1/CLK)

VOL

Output low voltage

VOH

Output high voltage (except o.d. outputs)5

VOH

Output high voltage (except o.d. outputs)4

IIL

Input leakage current

ILL

Data bus 3-State leakage current

IX1L

X1/CLK low input current

IX1H

X1/CLK high input current

IX2L

X2 low input current

IX2H

X2 high input current

IOC

Open-collector output leakage current

ICC

Power supply current

0°C to +70°C version

-40°C to +85°C version

IOL = 2.4mA

IOH = -400µA

IOH = -400µA

VIN = 0 to VCC

VO = 0.4 to VCC

VIN = 0, X2 grounded

VIN = 0, X2 floated

VIN = VCC, X2 grounded

VIN = VCC, X2 floated

VIN = 0, X1/CLK floated

VIN = VCC, X1/CLK floated

VO = 0.4 to VCC

0.8

2

2.5

V

4

0.4

2.4

V

2.9

–10

10

–10

10

µA

-4

-2

0

mA

-3

-1.5

0

mA

-1

0.2

1

mA

0

3.5

10

mA

-100 -30

0

µA

0

+30 100

µA

10

µA

–10

150 mA

175 mA

NOTES:

1. Parameters are valid over specified temperature range. See Ordering information table for applicable operating temperature range and VCC

supply range.

2. All voltage measurements are referenced to ground (GND). For testing, all inputs except X1/CLK swing between 0.4V and 2.4V with a

transition time of 20ns maximum. For X1/CLK this swing is between 0.4V and 4.4V. All time measurements are referenced at input voltages

of 0.8V and 2.0V as appropriate.

3. Typical values are at +25°C, typical supply voltages, and typical processing parameters.

4. TA < 0°C

5. TA > 0°C

1998 Sep 04

6

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