7405 TTL 集电极开路六反相器

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December 1986Revised February 2000

DM7405 Hex Inverters with Open-Collector Outputs

DM7405

Hex Inverters with Open-Collector Outputs

General Description

This device contains six independent gates each of which performs the logic INVERT function. The open-collector outputs require external pull-up resistors for proper logical operation.

Pull-Up Resistor Equations

Where: N 1 (I OH ) = total maximum output high current

for all outputs tied to pull-up resistor

N 2 (I IH ) = total maximum input high current for

all inputs tied to pull-up resistor

N 3 (I IL ) = total maximum input low current for all inputs tied to pull-up resistor

Ordering Code:

Connection Diagram Function Table

Y = A

H = HIGH Logic Level L = LOW Logic Level

Order Number Package Number

Package Description

DM7405N

N14A

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Input Output A Y L H H

L

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D M 7405

Absolute Maximum Ratings (Note 1)

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.

Recommended Operating Conditions

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)Note 2: All typicals are at V CC = 5V, T A = 25°C.

Switching Characteristics

at V CC = 5V and T A = 25°C Supply Voltage 7V Input Voltage 5.5V Output Voltage

7V

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

−65°C to +150°C

Symbol Parameter

Min Nom Max Units V CC Supply Voltage

4.755

5.25

V V IH HIGH Level Input Voltage 2

V V IL LOW Level Input Voltage 0.8V V OH HIGH Level Output Voltage 5.5V I OL LOW Level Output Current 16mA T A

Free Air Operating Temperature

070

°C

Symbol Parameter

Conditions

Min

Typ Max Units (Note 2)

V I Input Clamp Voltage V CC = Min, I I = −12 mA −1.5V I CEX HIGH Level V CC = Min, V O = 5.5V 250µA Output Current V IL = Max V OL LOW Level V CC = Min, I OL = Max

0.2

0.4V Output Voltage

V IH = Min

I I Input Current @ Max Input Voltage V CC = Max, V I = 5.5V 1mA I IH HIGH Level Input Current V CC = Max, V I = 2.4V 40µA I IL LOW Level Input Current

V CC = Max, V I = 0.4V −1.6mA I CCH Supply Current with Outputs HIGH V CC = Max 612mA I CCL

Supply Current with Outputs LOW

V CC = Max

1833

mA

Symbol Parameter

Conditions

Min

Max Units t PLH Propagation Delay Time C L = 15 pF 55ns LOW-to-HIGH Level Output R L = 4 k Ω (t PLH )t PHL

Propagation Delay Time R L = 400Ω (t PHL )

15

ns

HIGH-to-LOW Level Output

3

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DM7405 Hex Inverters with Open-Collector Outputs

Physical Dimensions inches (millimeters) unless otherwise noted

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N14A

Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:1.Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea-sonably expected to result in a significant injury to the user.

2. A critical component in any component of a life support device or system whose failure to perform can be rea-sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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