Motorola SN54LS125AJ, SN54LS126AJ, SN74LS126AN, SN74LS125AN, SN74LS126AD Datasheet

					SN54/74LS125A
QUAD 3-STATE BUFFERS					SN54/74LS126A

VCC	E	D	O	E	D	O
14	13	12	11	10	9	8
							QUAD 3-STATE BUFFERS
							LOW POWER SCHOTTKY
1	2	3	4	5	6	7
E	D	O	E	D	O	GND
		LS125A					J SUFFIX
							CERAMIC
							CASE 632-08
VCC	E	D	O	E	D	O	14
14	13	12	11	10	9		1
						8

									N SUFFIX
									PLASTIC
								14	CASE 646-06
								1
	1	2	3	4	5	6	7
	E	D	O	E	D	O	GND		D SUFFIX
			LS126A
								14	SOIC
									CASE 751A-02
								1
			TRUTH TABLES
	LS125A						LS126A	ORDERING INFORMATION
INPUTS					INPUTS
E	D	OUTPUT			E	D	OUTPUT	SN54LSXXXJ	Ceramic
								SN74LSXXXN	Plastic
L	L	L			H	L	L	SN74LSXXXD	SOIC
L	H	H			H	H	H
H	X	(Z)			L	X	(Z)

L = LOW Voltage Level

H = HIGH Voltage Level

X = Don't Care

(Z) = High Impedance (off)

GUARANTEED OPERATING RANGES

Symbol	Parameter		Min	Typ	Max	Unit
VCC	Supply Voltage	54	4.5	5.0	5.5	V
		74	4.75	5.0	5.25
TA	Operating Ambient Temperature Range	54	± 55	25	125	°C
		74	0	25	70
IOH	Output Current Ð High	54			± 1.0	mA
		74			± 2.6
IOL	Output Current Ð Low	54			12	mA
		74			24

FAST AND LS TTL DATA

5-207

SN54/74LS125A •SN54/74LS126A

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 for
							All Inputs
VIL	Input LOW Voltage	54			0.7	V	Guaranteed Input LOW Voltage for
		74			0.8		All Inputs
VIK	Input Clamp Diode Voltage			± 0.65	± 1.5	V	VCC = MIN, IIN = ±18 mA
VOH	Output HIGH Voltage	54	2.4			V	VCC = MIN, IOH = MAX, VIN = VIH
		74	2.4			V	or VIL per Truth Table
		54, 74		0.25	0.4	V	I = 12 mA	VCC = VCC MIN,
VOL	Output LOW Voltage						OL	VIN = VIL or VIH
		74		0.35	0.5	V	IOL = 24 mA
								per Truth Table
IOZH	Output Off Current HIGH				20	μA	VCC = MAX, VOUT = 2.4 V
IOZL	Output Off Current LOW				± 20	μA	VCC = MAX, VOUT = 0.4 V
IIH	Input HIGH Current				20	μA	VCC = MAX, VIN = 2.7 V
					0.1	mA	VCC = MAX, VIN = 7.0 V
IIL	Input LOW Current				± 0.4	mA	VCC = MAX, VIN = 0.4 V
IOS	Short Circuit Current (Note 1)		± 40		±225	mA	VCC = MAX
ICC	Power Supply Current	LS125A			20	mA	VCC = MAX	VIN = 0 V, VE = 4.5 V
		LS126A			22			VIN = 0 V, VE = 0 V

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

AC CHARACTERISTICS (TA = 25°C)

				Limits
Symbol	Parameter		Min	Typ	Max	Unit	Test Conditions
tPLH		LS125A		9.0	15
tPLH	Propagation Delay,	LS126A		9.0	15	ns	Figure 2
tPHL	Data to Output	LS125A		7.0	18
tPHL		LS126A		8.0	18			VCC = 5.0 V
								CL = 45 pF
		LS125A		12	20
tPZH	Output Enable Time					ns	Figures 4, 5	RL = 667 Ω
	to HIGH Level	LS126A		16	25
tPZL	Output Enable Time	LS125A		15	25	ns	Figures 3, 5
	to LOW Level	LS126A		21	35
tPHZ	Output Disable Time	LS125A			20	ns	Figures 4, 5
	from HIGH Level	LS126A			25			VCC = 5.0 V
								CL = 5.0 pF
		LS125A			20
tPLZ	Output Disable Time					ns	FIgures 3, 5	RL = 667 Ω
	from LOW Level	LS126A			25

FAST AND LS TTL DATA

5-208