MOTOROLA MC74AC126, MC74ACT126 Technical data

5-1

FACT DATA

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• Outputs Source/Sink

• ′ACT126 Has TTL Compatible Inputs

• 3-State Enable Input (Active High)

PIN ASSIGNMENTS

A0B0O0A1B1O1GND

1314 12 11 10 9 8

21 3 4 5 6 7

V

CC

A2B2O2A3B3O

3

PIN NAMES

Inputs
Outputs

An, B

n

O

n

FUNCTION TABLE

Inputs Output

A

n

B

n

O

n

H
H

L

H

L

H

L X Z

H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
X = Immaterial

MAXIMUM RATINGS*

Symbol Parameter Value Unit

V

CC

DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V

V

in

DC Input Voltage (Referenced to GND) –0.5 to VCC + 0.5 V

V

out

DC Output Voltage (Referenced to GND) –0.5 to VCC + 0.5 V

I

in

DC Input Current, per Pin ± 20 mA

I

out

DC Output Sink/Source Current, per Pin ± 50 mA

I

CC

DC VCC or GND Current per Output Pin ± 50 mA

T

stg

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.

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

QUAD BUFFER

WITH 3-STATE OUTPUTS

N SUFFIX

CASE 646-06

PLASTIC

D SUFFIX

CASE 751A-03

SOIC

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MC74AC126 MC74ACT126

5-2

FACT DATA

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Min Unit

′AC 2.0 5.0 6.0

VCCSupply Voltage

′ACT 4.5 5.0 5.5

V

Vin, V

out

DC Input Voltage, Output Voltage (Ref. to GND) 0 V

CC

V

VCC @ 3.0 V 150

Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs

VCC @ 4.5 V 40 ns/V

r

, t

f

′AC Devices except Schmitt Inputs

VCC @ 5.5 V 25

T

J

Junction Temperature (PDIP) 140 °C

T

A

Operating Ambient Temperature Range –40 25 85 °C

I

OH

Output Current — HIGH –24 mA

I

OL

Output Current — 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

V

CC

(V)

TA = +25°C

TA =

–40°C to +85°C

Unit

Conditions

Typ Guaranteed Limits

V

IH

3.0 1.5 2.1 2.1 V

OUT

= 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

V

IL

3.0 1.5 0.9 0.9 V

OUT

= 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

V

OH

3.0 2.99 2.9 2.9 I

OUT

= – 50 µA

Output Voltage

4.5 4.46 4.4 4.4 V

5.5 5.49 5.4 5.4
*VIN = VIL or V

IH

3.0 2.56 2.46

–12 mA

4.5 3.86 3.76

V

I

OH

– 24 mA

5.5 4.86 4.76 – 24 mA

V

OL

3.0 0.002 0.1 0.1 I

OUT

= 50 µA

Output Voltage

4.5 0.001 0.1 0.1 V

5.5 0.001 0.1 0.1
*VIN = VIL or V

IH

3.0 0.36 0.44

12 mA

4.5 0.36 0.44

V

I

OL

24 mA

5.5 0.36 0.44 24 mA

I

IN

Leakage Current

5.5

±0.1

±1.0

µA

I

= VCC, GND

I

OZ

VI (OE) = VIL, V

IH

I

(OE) = VIL, V

IH

VI = VCC, GND

±0.5

±5.0

µA

VI = VCC, GND

VO = VCC, GND VO = VCC, GND

I

OLD

5.5 75 mA V

OLD

= 1.65 V Max

I

OHD

Output Current

5.5 –75 mA V

OHD

= 3.85 V Min

ICC+

Supply Current

5.5

8.080µA

IN

= VCC or GND

* All outputs loaded; thresholds on input associated with output under test.
†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.

tr, t

f

Minimum High Level

Maximum Low Level

Minimum High Level

Minimum Low Level

Maximum Input

VI = VCC, GND

VI (OE) = VIL, V

†Minimum Dynamic

Maximum Quiescent

IH

5.5

VIN = VCC or GND