Philips Semiconductors

Preliminary specification

SC28L194

Quad UART for 3.3V and 5V supply voltage

1998 Sep 21

40

DC ELECTRICAL SPECIFICATIONS FOR COMMERCIAL AND INDUSTRIAL (5V)

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

MAX.

UNIT

0.8

V

V

Input high voltage (except X1/CLK)

2.0

V

Input high voltage (X1/CLK)

V

0.15

0.4

V

Output high voltage

V

Output high voltage

V

Open-drain low voltage

<0.25

0.4

V

Input current low, I/O pins

–10

<0.1

µA

Input current high, I/O pins

<0.1

10

µA

Input leakage current

–5

<1

5

µA

X1/CLK input low current

–450

µA

X1/CLK input high current

450

µA

Output off current high, 3-State data bus

<0.1

10

µA

Output off current low, 3-State data bus

–10

<0.1

µA

Open-drain output low current in off state

–10

<0.1

µA

Open-drain output high current in off state

<0.1

10

µA

Power supply current

TTL input levels

80

120

mA

Operating mode 33MHz

CMOS input levels

19

30

mA

Static Power-down (no clocks, open-drains off,

CMOS input levels

5

25

µA

NOTES:

1. Typical values are at +25

°C, typical supply voltage and typcial processing parameters.

appropriate.

4. Simultaneous switching more than 6 I/O port pins from 5 volts to 0 volts at full capacitive load may ground bounce on the output pins up to

0.95 volts.