ST MC1489, MC1489A User Manual

MC1489

MC1489A

QUAD LINE RECEIVERS

■INPUT RESISTANCE –3k to 7kΩ

■INPUT SIGNAL RANGE – ± 30V

■INPUT THRESHOLD HYSTERESIS BUILT-IN

■RESPONSE CONTROL:

a) LOGIC THRESHOLD SHIFTING b) INPUT NOISE FILTERING

	DESCRIPTION
	The MC1489 monolithic quad line receivers are	DIP
	designed to interface data terminal equipment
	with data communications equipment in
	conformance with the specifications of EIA
	Standard N° RS232C.

SOP

SCHEMATIC DIAGRAM

September 2003

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MC1489/MC1489A

PIN CONFIGURATION (top view)

ORDERING CODES

	DIP14		SO14	SO14 (TAPE & REEL)
	MC1489P		MC1489D1	MC1489D1013TR
	MC1489AP			MC1489AD1013TR
ABSOLUTE MAXIMUM RATINGS
Symbol		Parameter		Value		Unit
VS	Power Supply Voltage			10		V
VI	Input Voltage Range			±30		V
IOL	Output Load Current			20		mA
PTOT	Power Dissipation			1		W
Tamb	Operating Ambient Temperature			0 to 75		°C
Tstg	Storage Temperature Range			-65 to 150		°C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

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MC1489/MC1489A

ELECTRICAL CHARACTERISTICS

Response Control Pin in Open; VS = 5V, Tamb = 0 to 75°C, unless otherwise specified.

Symbol	Parameter		Test Conditions			Min.		Typ.	Max.	Unit
IIH	Positive Input Current	VIH = 25 V				3.6			8.3	mA
		VIH = 3 V				0.43
IIL	Negative Input Current	VIL = - 25 V				-3.6			-8.3	mA
		VIL = - 3 V				-0.43
VIH	Input Turn-On Threshold	Tamb = 25°C, V OL £ 0.45 V		for MC1489		1			1.5	V
	Voltage	IL = 10 mA		for MC1489A		1.75		1.95	2.25
VIL	Input Turn-Off Threshold	Tamb = 25°C, V OL ³ 2.5 V IL =		-0.5 mA		0.75			1.25	V
	Voltage
VOH	Output Voltage High	VIH = 0.75 V, IL = -0.5 mA				2.5		4	5	V
		IL = 0.5 mA Input Open Circuit				2.5		4	5
VOL	Output Voltage Low	VIL = 3 V, IL = 10 mA						0.2	0.45	V
IOS	Output Short Circuit							-3	-4	mA
	Current
IS	Power Supply Current	All gates "ON", IO = 0 mA, VIH = 5 V						16	26	mA
PC	Power Consumption	VIH = 5 V						80	130	mW
SWITCHING CHARACTERISTICS
VS = 5V, Tamb = 25°C, (see Figure 1)
Symbol	Parameter		Test Conditions			Min.		Typ.	Max.	Unit
tPLH	Propagation Delay Time		RL = 3.9 KΩ					25	85	ns
tTHL	Rise Time		RL = 3.9 KΩ					120	175	ns
tPHL	Propagation Delay Time		RL = 390 Ω					25	50	ns
tTHL	Fall Time		RL = 390 Ω					10	20	ns

TEST CIRCUITS

Figure 1 : Switching Response

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Figure 2 : Response Control Node

C: capacitor is for noise filtering

Figure 3 : Input Current

Figure 4 : Output Short-Circuit Current

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