PIN DESCRIPTION

PIN No

SYMBOL

NAME AND FUNCTION

1, 9

1A, 2A

Trigger Inputs (Negative

Edge Triggered)

2, 10

1B, 2B

Trigger Inputs (Positive

Edge Triggered)

3, 11

1CLR,

2CLR

Direct Reset LOW and

Trigger Action at Positive

Edge

4, 12

1Q, 2Q

Outputs (Active LOW)

External Resistor

Capacitor Connection

13, 5

1Q, 2Q

Outputs (Active HIGH)

14, 6

External Capacitor

Connection

15

External Resistor

Capacitor Connection

8

GND

Ground (0V)

16

Positive Supply Voltage

IEC LOGIC SYMBOL

ABSOLUTE MAXIMUM RATING

Symbol

Parameter

Value

Unit

Supply Voltage

-0.5 to +7

V

DC Input Voltage

V

DC Output Voltage

V

DC Input Diode Current

± 20

mA

DC Output Diode Current

± 20

mA

DC Output Source Sink Current Per Output Pin

± 25

mA

± 50

mA

Power Dissipation

500 (*)

mW

Storage Temperature

-65 to +150

Lead Temperature (10 sec)

300

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

(*) 500 mW:

M54/M74HC123/123A

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