SC28L198 datasheet(45/56 Pages) PHILIPS

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Philips Semiconductors

Product specification

SC28L198

Octal UART for 3.3V and 5V supply voltage

1999 Jan 14

DC ELECTRICAL SPECIFICATIONS FOR COMMERCIAL AND INDUSTRIAL (3.3V)

VCC = 3.3 volts " 10%; TA = –40 to 85°C; unless otherwise specified

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP1

MAX

UNIT

VIL

VIH

Input low voltage2

Input high voltage (except X1/CLK)

Input high voltage (X1/CLK)

VSS

0.8 * VCC

0.2 * VCC

VCC

VOL3

VOH

VOL3

Output low voltage4

Output high voltage (except OD outputs)

Open Drain low voltage

IOL = 3.2mA

IOH = –400mA

IOH = –100mA

IOL = 10.0mA

0.8VCC

0.9VCC

0.15

<0.25

0.4

IIL

IIH

Input current low, I/O pins

Input current high, I/O pins

VIN = 0

VIN = VCC

–5

<0.1

Input leakage current

VIN = 0 to VCC

–5

IILCKX1

IIHCKX1

X1/CLK input low current

X1/CLK input high current

VIN=VSS,X2=Open

VIN=VCC, X2=Open

–300

300

IOZH

IOZL

Output off current high, 3–state data bus

Output off current low, 3–state data bus

VIN = Vcc

VIN = 0

–5

<.1

IODL

IODH

Open–drain output low current in off state

Open drain output high current in off state

VIN = 0

VIN = VCC

–5

<.1

ICC

Power supply current

Operating mode 33 MHz

Static Power down (No clocks, Open drains off,

inputs at Vss or Vcc)

TTL Input levels

CMOS input levels

0.6

NOTES:

1. Typical values are at +25

°C, typical supply voltage and typical processing parameters.

2. All voltage measurements are referenced to VSS. For testing, all inputs swing between 0.4V and 2.4V with a transition time of 10nS

maximum. For X1/CLK this swing is between 0.2V and 2.88V. all time measurements are referenced at input voltages of VIL and VIH as

appropriate.

3. Test conditions for itnerrupt and I/O outputs: CL = 50pF. Test conditions for the rest of the outputs: CL = 60pF.

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.

5. All RX, TX, Brg Timer, I/O pins operating at 16MHz. Sclk at 35MHz and VCC at 5.6 volts. A worst case environment.

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