DM7438 7438 Data Handbook by Fairchild
Summary
The DM7438 is a specialized integrated circuit providing four independent 2-input NAND gates with open-collector outputs. Designed for hardware engineers and electronic designers, this chip offers reliable logic buffering functionality requiring external pull-up resistors. This manual provides comprehensive technical details, including absolute maximum ratings, detailed electrical specifications (such as input/output voltages and propagation delays), and ordering information across various packages (SOIC, PDIP, SOP). Use these guidelines to seamlessly integrate high-performance NAND logic into your next circuit board design.
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查询7438SJ供应商
7438 • 7438 Q ad 2-In t N ffers w ith en -C llecto r O tp ts
September 1986 Revised February 2000
DM7438 • 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs General Description Pull-Up Resistor Equations This device contains four independent gates each of which performs the logic NAND function. The open-collector out- puts require external pull-up resistors for proper logical operation.
Where: N1 (IOH) = total maximum output high current
for all outputs tied to pull-up resistor
N2 (IIH) = total maximum input high current for
all inputs tied to pull-up resistor N3 (IIL) = total maximum input low current for all inputs tied to pull-up resistor
Ordering Code: Order Number Package Number Package Description DM7438M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM7438N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide 7438SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram Function Table
Y = AB
Inputs Output
H = HIGH Logic Level L = LOW Logic Level
© 2000 Fairchild Semiconductor Corporation DS006513 www.fairchildsemi.com
Page Summary Contents For DM7438 7438 Data Handbook by Fairchild
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 5 |
| File Size | 62.98 KB |
| Published | June 20, 2026 |
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Frequently Asked Questions
What is required for proper logical operation of this open-collector device?
The outputs require external pull-up resistors to operate correctly.
Can I use this component in life support devices or systems?
No, Fairchild's products are not authorized for use as critical components in life support without express written approval.
What is the recommended standard operating temperature range?
The recommended free air operating temperature range is 0°C to +70°C.
Which physical packages can I order this IC in?
Available packages include SOIC (M14A), PDIP (N14A), and SOP (M14D).