SCC2681T 查看數據表（PDF） - Philips Electronics

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SCC2681T

Dual asynchronous receiver/transmitter (DUART)

Philips Electronics 

Philips Semiconductors

Dual asynchronous receiver/transmitter (DUART)

Product data

SCC2681T

DC ELECTRICAL CHARACTERISTICS1, 2, 3

Tamb = 0 °C to +70 °C; VCC = +5.0 V ± 10%

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

Min

Typ

UNIT

Max

VIL

LOW-level input voltage

VIH

HIGH-level input voltage (except X1/CLK)

VIH

HIGH-level input voltage (except X1/CLK)

VIH

HIGH-level input voltage (X1/CLK)

Tamb ≥ 0 °C

Tamb < 0 °C

–

–

0.8

V

2.0

–

–

V

2.5

–

–

V

0.8 VCC

–

–

V

VOL

LOW-level output voltage

VOH

HIGH-level output voltage (except open-drain outputs)4

IOL = 2.4 mA

IOH = –400 µA

–

–

0.4

V

VCC – 0.5 –

–

V

IIX1

IILX1

IIHX1

X1/CLK input current

X1/CLK input LOW current – operating

X1/CLK input HIGH current – operating

VIN = 0 V to VCC

VIN = 0 V

VIN = VCC

–10

–

+10 µA

–75

–

0

µA

0

–

75

µA

IOHX2

IOHX2S

IOLX2

IOLX2S

II

IOZH

IOZL

IODL

IODH

ICC

X2 output HIGH current – operating

X2 output HIGH short circuit current – operating

X2 output LOW current – operating

X2 output LOW short circuit current – operating

Input leakage current:

All except input port pins

Input port pins

Output off current HIGH, 3-state data bus

Output off current LOW, 3-state data bus

Open-drain output LOW current in off-state

Open-drain output HIGH current in off-state

Power supply current5

Operating mode

VOUT = VCC; X1 = 0

0

VOUT = 0 V; X1 = 0

–10

VOUT = 0 V; X1 = VCC

–75

VOUT = VCC; X1 = VCC

1

VIN = 0 V to VCC

–10

VIN = 0 V to VCC

–20

VIN = VCC

–

VIN = 0 V

–10

VIN = 0 V

–10

VIN = VCC

–

CMOS input levels

–

–

+75 µA

–

–1 mA

–

0

µA

–

10 mA

–

+10 µA

–

+10 µA

–

10

µA

–

–

µA

–

–

µA

–

10

µA

–

10 mA

NOTES:

1. Parameters are valid over specified temperature range.

2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4 V and 2.4 V with a transition time of

5 ns maximum. For X1/CLK this swing is between 0.4 V and 4.4 V. All time measurements are referenced at input voltages of 0.8 V and

2.0 V and output voltages of 0.8 V and 2.0 V, as appropriate.

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

4. Test conditions for outputs: CL = 150 pF, except interrupt outputs. Test conditions for interrupt outputs: CL = 50 pF, RL = 2.7 kΩ to VCC.

5. All outputs are disconnected. Inputs are switching between CMOS levels of VCC – 0.2 V and VSS + 0.2 V.

2004 Apr 06

7

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