Motorola MC74F243D, MC74F243N, MC74F242D, MC74F242N, MC54F243J Datasheet

MC54/74F242

QUAD BUS TRANCEIVERS MC54/74F243 WITH 3-STATE OUTPUTS

	The MC54/74F242 and MC54/74F243 are Quad Bus Transmitters/Receiv-
	ers designed for 4-line asynchronous 2-way data communication between	QUAD BUS TRANSCEIVERS
	data buses.
	• 2-Way Asynchronous Data Bus Communication	WITH 3-STATE OUTPUTS
	• Input Clamp Diodes Limit High-Speed Termination Effects	FAST SCHOTTKY TTL
	• ESD > 4000 Volts

		MC54/74F242 (TOP VIEW)
	VCC	OE2	NC	1B	2B	3B	4B		J SUFFIX
	14	13	12	11	10	9	8		CERAMIC
									CASE 632-08
								14
								1
									N SUFFIX
									PLASTIC
								14	CASE 646-06
	1	2	3	4	5	6	7
	OE1	NC	1A	2A	3A	4A	GND	1
		MC54/74F243 (TOP VIEW)							D SUFFIX
								14	SOIC
	VCC	OE2	NC	1B	2B	3B	4B		CASE 751A-02
								1
	14	13	12	11	10	9	8
								ORDERING INFORMATION
								MC54FXXXJ	Ceramic
								MC74FXXXN	Plastic
								MC74FXXXD	SOIC
	1	2	3	4	5	6	7
	OE1	NC	1A	2A	3A	4A	GND

GUARANTEED OPERATING RANGES

Symbol	Parameter		Min	Typ	Max	Unit
VCC	Supply Voltage	54,74	4.5	5.0	5.5	V
TA	Operating Ambient TemperatureRange	54	±55	25	125	°C
		74	0	25	70
IOH	Output Current Ð High	54			±12	mA
		74			±15
IOL	Output Current Ð Low	54			48	mA
		74			64

FAST AND LS TTL DATA

4-187

MC54/74F242 •MC54/74F243

FUNCTION TABLE ± MC54/74F242

FUNCTION TABLE ± MC54/74F243

Inputs			Inputs
OE1	D	Output	OE2	D	Output
L	L	H	L	X	Z
L	H	L	L	X	Z
H	X	Z	H	L	H
H	X	Z	H	H	L

Inputs			Inputs
OE1	D	Output	OE2	D	Output
L	L	L	L	X	Z
L	H	H	L	X	Z
H	X	Z	H	L	L
H	X	Z	H	H	H

H = HIGH Voltage Level; L = LOW Voltage Level ; X = Don't Care; Z = HIGH Impedance

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

				Limits
Symbol	Parameter		Min	Typ	Max	Unit	Test Conditions
VIH	Input HIGH voltage		2.0			V	Guaranteed Input HIGH Voltage
VIL	Input LOW Voltage				0.8	V	Guaranteed Input LOW Voltage
VIK	Input Clamp Diode Voltage				±1.2	V	IIN = ±18 mA	VCC = MIN
		54	2.0			V	IOH = ±12 mA	VCC = 4.50 V
VOH	Output HIGH Voltage	74	2.0			V	IOH = ±15 mA	VCC = 4.50 V
		54, 74	2.4			V	IOH = ±3.0 mA	VCC = 4.50 V
		74	2.7			V	IOH = ±3.0 mA	VCC = 4.75 V
VOL	Output LOW Voltage	54			0.55	V	IOL = 48 mA	VCC = MIN
		74			0.55	V	IOL = 64 mA
IOZH	Output Off Current HIGH				70	μA	VOUT = 2.7 V	VCC = MAX
					1.0	mA	VOUT = 5.5 V
IOZL	Output Off Current LOW				±1.6	mA	VOUT = 0.5 V	VCC = MAX
		Enable			20	μA	VIN = 2.7 V
IIH	Input HIGH Current	Data			70	μA	VIN = 2.7 V	VCC = MAX
		Data			1.0	mA	VIN = 5.5 V
		Enable			0.1	mA	VIN = 7.0 V
IIL	Input LOW Current	Enable			-1.0	mA	VIN = 0.5 V	VCC = MAX
		Data			-1.6	mA	VIN = 0.5 V
IOS	Output Short Circuit Current	74	±100		±225	mA	VOUT = 0 V	VCC = MAX
	(Note 2)	54	±100		±275	mA
ICCH	Power Supply	F242			60	mA	Outputs	VCC = MAX
	Current HIGH	F243			80	mA	HIGH
ICCL	Power Supply	F242			75	mA	Outputs	VCC = MAX
	Current LOW	F243			90	mA	LOW
ICCZ	Power Supply	F242			75	mA	Outputs	VCC = MAX
	Current OFF	F243			90	mA	OFF

NOTES:

1.For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.

2.Not more than one output should be shorted at a time, nor for more than 1 second.

FAST AND LS TTL DATA

4-188