MOTOROLA MC74ACT14MEL, MC74ACT14ML1, MC74ACT14ML2, MC74ACT14MR1, MC74ACT14MR2 Datasheet

Hex Inverter Schmitt Trigger

The MC74AC14/74ACT14 contains six logic inverters which accept standard CMOS Input signals (TTL levels for MC74ACT14) and provide standard CMOS output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. In addition, they have a greater noise margin then conventional inverters.

The MC74AC14/74ACT14 has hysteresis between the positive-going and negative-going input thresholds (typically 1.0 V) which is determined internally by transistor ratios and is essentially insensitive to temperature and supply voltage variations.

•Schmitt Trigger Inputs

•Outputs Source/Sink 24 mA

•′ACT14 Has TTL Compatible Inputs

VCC

14	13	12	11	10	9	8
1	2	3	4	5	6	7
						GND

FUNCTION TABLE

Input	Output
A	O
L	H
H	L

MC74AC14

MC74ACT14

HEX INVERTER

SCHMITT TRIGGER

N SUFFIX

CASE 646-06

PLASTIC

D SUFFIX

CASE 751A-03

PLASTIC

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

MC74AC14 MC74ACT14

RECOMMENDED OPERATING CONDITIONS

	Symbol	Parameter		Min	Typ	Max	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
	tr, tf	Input Rise and Fall Time (Note 2)	VCC @ 4.5 V		10		ns/V
		′ACT Devices except Schmitt Inputs	VCC @ 5.5 V		8.0
	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
VOH	Minimum High Level	3.0	2.99	2.9	2.9		IOUT = ±50 mA
	Output Voltage	4.5	4.49	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	Maximum 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			±	±	μ
	Leakage Current	5.5		0.1	1.0	A	VI = 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					μ
	Supply Current	5.5		4.0	40	A	VIN = VCC or GND

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

FACT DATA

5-2