SC28C94 datasheet(23/38 Pages) PHILIPS

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Philips Semiconductors

Product specification

SC28C94

Quad universal asynchronous receiver/transmitter (QUART)

1998 Aug 19

DC ELECTRICAL CHARACTERISTICS

VCC = 5V ± 10%, TA = –40_C to 85_C, unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

Min

Typ

Max

UNIT

VIL

Input low voltage

0.8

Input high voltage (except X1/CLK)

0 to +70

°C

2.0

VIH

Input high voltage (except X1/CLK)

–40 to +85

°C

2.2

VIH

Input high voltage (X1/CLK)

0.8VCC

VOL

VOH

Output Low voltage

Output High voltage (except OD outputs)

IOL = 4.0mA

IOH = –400µA

IOH = –100µA

0.8VCC

0.9VCC

0.4

IIL

IIH

Input current Low, I/O ports

Input current High, I/O ports

VIN = 0

VIN = VCC

–10

µA

Input leakage current

VIN = 0 to VCC

–1

µA

IILX1

IIHX1

X1/CLK input Low current

X1/CLK input High current

VIN = GND, X2 = open

VIN = VCC, X2 = open

–140

140

µA

IOZH

IOZL

Output off current High, 3–state data bus

Output off current Low, 3–state data bus

VIN = VCC

VIN = 0

–1

µA

IODL

IODH

Open–drain output Low current in off state: IRQN

VIN = 0

VIN = VCC

–1

µA

ICC

Power supply current

Operating mode

CMOS input levels 25

°C

with X1 = 4MHz

ICC

Power down mode1

NOTES:

1. See UART application note for power down currents less than 5

µA.

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