MOTOROLA MC74AC126, MC74ACT126 Technical data

MC74AC126

MC74AC126

MC74ACT126

Quad Buffer With 3 State Outputs QUAD BUFFER

WITH 3-STATE OUTPUTS

• Outputs Source/Sink

• ′ACT126 Has TTL Compatible Inputs

• 3-State Enable Input (Active High)

	PIN ASSIGNMENTS
VCC	A2	B2	O2	A3	B3	O3
14	13	12	11	10	9	8
								N SUFFIX
						PIN NAMES		CASE 646-06
								PLASTIC
						An, Bn	Inputs
						On	Outputs
1	2	3	4	5	6	7
A0	B0	O0	A1	B1	O1	GND

FUNCTION TABLE						D SUFFIX
Inputs			Output
						CASE 751A-03
An		Bn	On			SOIC
H		L	L
H		H	H
L		X	Z
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
X = Immaterial
MAXIMUM RATINGS*
Symbol				Parameter		Value	Unit
VCC		DC Supply Voltage (Referenced to GND)				±0.5 to +7.0	V
Vin		DC Input Voltage (Referenced to GND)				±0.5 to VCC + 0.5	V
Vout		DC Output Voltage (Referenced to GND)				±0.5 to VCC + 0.5	V
Iin		DC Input Current, per Pin				± 20	mA
Iout		DC Output Sink/Source Current, per Pin				± 50	mA
ICC		DC VCC or GND Current per Output Pin				± 50	mA
Tstg		Storage Temperature				±65 to +150	°C

*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions.

FACT DATA

5-1

MC74AC126 MC74ACT126

RECOMMENDED OPERATING CONDITIONS

	Symbol	Parameter		Min	Typ	Min	Unit
	VCC	Supply Voltage	′AC	2.0	5.0	6.0	V
			′ACT	4.5	5.0	5.5
	Vin, Vout	DC Input Voltage, Output Voltage (Ref. to GND)		0		VCC	V
		Input Rise and Fall Time (Note 1)	VCC @ 3.0 V		150
	tr, tf		VCC @ 4.5 V		40		ns/V
		′AC Devices except Schmitt Inputs
			VCC @ 5.5 V		25
	TJ	Junction Temperature (PDIP)				140	°C
	TA	Operating Ambient Temperature Range		±40	25	85	°C
	IOH	Output Current Ð HIGH				±24	mA
	IOL	Output Current Ð LOW				24	mA

1.Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2.Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

DC CHARACTERISTICS

			74AC		74AC
Symbol	Parameter	VCC	TA = +25°C		TA =	Unit		Conditions
		(V)			±40°C to +85°C
			Typ	Guaranteed Limits
VIH	Minimum High Level	3.0	1.5	2.1	2.1		VOUT = 0.1 V
	Input Voltage	4.5	2.25	3.15	3.15	V	or VCC ± 0.1 V
		5.5	2.75	3.85	3.85
VIL	Maximum Low Level	3.0	1.5	0.9	0.9		VOUT = 0.1 V
	Input Voltage	4.5	2.25	1.35	1.35	V	or VCC ± 0.1 V
		5.5	2.75	1.65	1.65
VOH	Minimum High Level	3.0	2.99	2.9	2.9		IOUT = ± 50 mA
	Output Voltage	4.5	4.46	4.4	4.4	V
		5.5	5.49	5.4	5.4
							*VIN = VIL or VIH
		3.0		2.56	2.46	V		±12 mA
		4.5		3.86	3.76		IOH	± 24 mA
		5.5		4.86	4.76			± 24 mA
VOL	Minimum Low Level	3.0	0.002	0.1	0.1		IOUT = 50 mA
	Output Voltage	4.5	0.001	0.1	0.1	V
		5.5	0.001	0.1	0.1
							*VIN = VIL or VIH
		3.0		0.36	0.44	V		12 mA
		4.5		0.36	0.44		IOL	24 mA
		5.5		0.36	0.44			24 mA
IIN	Maximum Input	5.5		±0.1	±1.0	μA	VI = VCC, GND
	Leakage Current
IOZ	VI (OE) = VIL, VIH						VI (OE) = VIL, VIH
	VI = VCC, GND	5.5		±0.5	±5.0	μA	VI = VCC, GND
	VO = VCC, GND						VO = VCC, GND
IOLD	²Minimum Dynamic	5.5			75	mA	VOLD = 1.65 V Max
	Output Current
IOHD		5.5			±75	mA	VOHD = 3.85 V Min
ICC+	Maximum Quiescent	5.5		8.0	80	μA	VIN = VCC or GND
	Supply Current

* All outputs loaded; thresholds on input associated with output under test. ² Maximum test duration 2.0 ms, one input loaded at a time.

Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V.

FACT DATA

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