MM74C908N

MM74C908N Datasheet

MM74C908 Dual CMOS 30-Volt Relay Driver

Part	Datasheet
MM74C908N	MM74C908N (pdf)

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MM74C908 Dual CMOS 30-Volt Relay Driver MM74C908 Dual CMOS 30-Volt Relay Driver The MM74C908 is a general purpose dual high voltage driver capable of sourcing a minimum of 250 mA at VOUT = VCC − 3V, and TJ = 65°C. The MM74C908 consists of two CMOS NAND gates driving an emitter follower Darlington output to achieve high current drive and high voltage capabilities. In the “OFF” state the outputs can withstand a maximum of −30V across the device. These CMOS drivers are useful in interfacing normal CMOS voltage levels to driving relays, regulators, lamps, etc. s Wide supply voltage range 3V to 18V s High noise immunity VCC typ. s Low output “ON” resistance typ. s High voltage −30V s High current 250 mA Ordering Code: Order Number Package Number Package Description MM74C908N N08E 8-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Connection Diagram Pin Assignments for DIP Top View 1999 Fairchild Semiconductor Corporation DS005912.prf MM74C908 Absolute Maximum Ratings Note 1 Voltage at any Input Pin Voltage at any Output Pin Operating Temperature Range Operating VCC Range Absolute Maximum VCC ISOURCE Storage Temperature Range TS −0.3V to VCC +0.3V 32V −40°C to +85°C 4V to 18V 19V 500 mA +150°C −65°C to +150°C Lead Temperature TL Soldering, 10 seconds Power Dissipation PD 260°C Refer to Maximum Power Dissipation vs Ambient Temperature Graph Note 1 “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The Electrical Characteristics table provides conditions for actual device operation. DC Electrical Characteristics Min/Max limits apply across temperature range, unless otherwise noted Parameter Conditions CMOS TO CMOS VIN 1 Logical “1” Input Voltage VIN 0 Logical “0” Input Voltage IIN 1 IIN 0 ICC Logical “1” Input Current Logical “0” Input Current Supply Current Output “OFF” Voltage CMOS/LPTTL INTERFACE VCC = 5V VCC = 10V VCC = 5V VCC = 10V VCC = 15V, VIN = 15V VCC = 15V, VIN = 0V VCC = 15V, Outputs Open Circuit VIN = VCC, IOUT = −200 µA VIN 1 Logical “1” Input Voltage VIN 0 Logical “0” Input Voltage OUTPUT DRIVE VCC = 4.75V VCC = 4.75V VOUT Output Voltage Output Resistance Output Resistance

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MM74C908 Dual CMOS 30-Volt Relay Driver

MM74C908 Dual CMOS 30-Volt Relay Driver

The MM74C908 is a general purpose dual high voltage driver capable of sourcing a minimum of 250 mA at VOUT = VCC − 3V, and TJ = 65°C.

The MM74C908 consists of two CMOS NAND gates driving an emitter follower Darlington output to achieve high current drive and high voltage capabilities. In the “OFF” state the outputs can withstand a maximum of −30V across the device. These CMOS drivers are useful in interfacing
normal CMOS voltage levels to driving relays, regulators, lamps, etc.
s Wide supply voltage range 3V to 18V s High noise immunity VCC typ. s Low output “ON” resistance typ. s High voltage −30V s High current 250 mA
Ordering Code:

Order Number Package Number

Package Description

MM74C908N

N08E
8-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide

Connection Diagram

Pin Assignments for DIP

Top View 1999 Fairchild Semiconductor Corporation DS005912.prf

MM74C908

Absolute Maximum Ratings Note 1

Voltage at any Input Pin Voltage at any Output Pin Operating Temperature Range Operating VCC Range Absolute Maximum VCC ISOURCE Storage Temperature

Range TS
−0.3V to VCC +0.3V 32V
−40°C to +85°C 4V to 18V 19V 500 mA +150°C
−65°C to +150°C

Lead Temperature TL Soldering, 10 seconds

Power Dissipation PD
260°C Refer to Maximum Power

Dissipation vs Ambient Temperature Graph

Note 1 “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The Electrical Characteristics table provides conditions
for actual device operation.

DC Electrical Characteristics

Min/Max limits apply across temperature range, unless otherwise noted

Parameter

Conditions

CMOS TO CMOS

VIN 1

Logical “1” Input Voltage

VIN 0

Logical “0” Input Voltage

IIN 1 IIN 0 ICC

Logical “1” Input Current Logical “0” Input Current Supply Current Output “OFF” Voltage

CMOS/LPTTL INTERFACE

VCC = 5V VCC = 10V VCC = 5V VCC = 10V VCC = 15V, VIN = 15V VCC = 15V, VIN = 0V VCC = 15V, Outputs Open Circuit VIN = VCC, IOUT = −200 µA

VIN 1 Logical “1” Input Voltage VIN 0 Logical “0” Input Voltage OUTPUT DRIVE

VCC = 4.75V VCC = 4.75V

VOUT

Output Voltage

Output Resistance

Output Resistance

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Datasheet ID: MM74C908N 634363