MM74C908 Dual CMOS 30-Volt Relay Driver
October 1987 Revised January 1999
MM74C908 Dual CMOS 30-Volt Relay Driver
Gene...
MM74C908 Dual
CMOS 30-Volt Relay Driver
October 1987 Revised January 1999
MM74C908 Dual
CMOS 30-Volt Relay Driver
General Description
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.
Features
s Wide supply
voltage range: s High noise immunity: s High
voltage: −30V s High current: 250 mA 3V to 18V 0.45 VCC (typ.) s Low output “ON” resistance: 8Ω (typ.)
Ordering Code:
Order Number MM74C908N Package Number N08E Package Description 8-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Connection Diagram
Pin Assignments for DIP
Top View
© 1999 Fairchild Semiconductor Corporation
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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
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