74LS373 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

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74LS373

3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops

Fairchild Semiconductor 

Absolute Maximum Ratings(Note 1)

Supply Voltage

7V

Input Voltage

7V

Storage Temperature Range

−65°C to +150°C

Operating Free Air Temperature Range 0°C to +70°C

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

DM74LS373 Recommended Operating Conditions

Symbol

Parameter

Min

VCC

Supply Voltage

4.75

VIH

HIGH Level Input Voltage

2

VIL

LOW Level Input Voltage

IOH

HIGH Level Output Current

IOL

LOW Level Output Current

tW

Pulse Width

Enable HIGH

15

(Note 3)

Enable LOW

15

tSU

Data Setup Time (Note 2) (Note 3)

5↓

tH

Data Hold Time (Note 2) (Note 3)

20↓

TA

Free Air Operating Temperature

0

Note 2: The symbol (↓) indicates the falling edge of the clock pulse is used for reference.

Note 3: TA = 25°C and VCC = 5V.

Nom

5

DM74LS373 Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Min

VI

Input Clamp Voltage

VCC = Min, II = −18 mA

VOH

HIGH Level

VCC = Min, IOH = Max

2.4

Output Voltage

VIL = Max, VIH = Min

VOL

LOW Level

VCC = Min, IOL = Max

Output Voltage

VIL = Max, VIH = Min

IOL = 12 mA, VCC = Min

II

Input Current @ Max Input Voltage VCC = Max, VI = 7V

IIH

HIGH Level Input Current

VCC = Max, VI = 2.7V

IIL

LOW Level Input Current

VCC = Max, VI = 0.4V

IOZH

Off-State Output Current with

VCC = Max, VO = 2.7V

HIGH Level Output Voltage Applied VIH = Min, VIL = Max

IOZL

Off-State Output Current with

VCC = Max, VO = 0.4V

LOW Level Output Voltage Applied VIH = Min, VIL = Max

IOS

Short Circuit Output Current

VCC = Max (Note 5)

−50

ICC

Supply Current

VCC = Max, OC = 4.5V,

Dn, Enable = GND

Note 4: All typicals are at VCC = 5V, TA = 25°C.

Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Max

Units

5.25

V

V

0.8

V

−2.6

mA

24

mA

ns

ns

ns

70

°C

Typ

Max

(Note 4)

−1.5

3.1

Units

V

V

0.35

0.5

V

0.4

0.1

mA

20

µA

−0.4

mA

20

µA

−20

µA

−225

mA

24

40

mA

3

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