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4

Note 2: “Absolute Maximum Ratings” are those values beyond which the

safety of the device cannot be guaranteed. Except for “Operating Tempera-

ture Range” they are not meant to imply that the devices should be oper-

ated at these limits. The table of “Electrical Characteristics” provides

conditions for actual device operation.

DC Electrical Characteristics

Min/Max limits apply across temperature range unless otherwise specified

Voltage at Any Pin

Operating Temperature Range

MM74C922, MM74C923

−40°C to +85°C

Storage Temperature Range

−65°C to +150°C

Dual-In-Line

700 mW

Small Outline

500 mW

3V to 15V

18V

Lead Temperature

(Soldering, 10 seconds)

260

°C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

CMOS TO CMOS

Positive-Going Threshold Voltage

3.0

3.6

4.3

V

at Osc and KBM Inputs

6.0

6.8

8.6

V

9.0

10

12.9

V

Negative-Going Threshold Voltage

0.7

1.4

2.0

V

at Osc and KBM Inputs

1.4

3.2

4.0

V

2.1

5

6.0

V

Logical “1” Input Voltage,

3.5

4.5

V

Except Osc and KBM Inputs

8.0

9

V

12.5

13.5

V

Logical “0” Input Voltage,

0.5

1.5

V

Except Osc and KBM Inputs

1

2

V

1.5

2.5

V

Row Pull-Up Current at Y1, Y2,

−2

−5

µA

Y3, Y4 and Y5 Inputs

−10

−20

µA

−22

−45

µA

Logical “1” Output Voltage

V

V

V

Logical “0” Output Voltage

V

1

V

1.5

V

Column “ON” Resistance at

500

1400

Ω

X1, X2, X3 and X4 Outputs

300

700

Ω

200

500

Ω

Supply Current

0.55

1.1

mA

Osc at 0V, (one Y low)

1.1

1.9

mA

1.7

2.6

mA

Logical “1” Input Current

0.005

1.0

µA

at Output Enable

Logical “0” Input Current

−1.0

−0.005

µA

at Output Enable

CMOS/LPTTL INTERFACE

Except Osc and KBM Inputs

V

Except Osc and KBM Inputs

0.8

V

Logical “1” Output Voltage

2.4

V