DM5438
DM5438 is Quad 2-Input NAND Buffers manufactured by National Semiconductor.
Description
This device contains four independent gates each of which performs the logic NAND function The open-collector outputs require external pull-up resistors for proper logical operation
Pull-Up Resistor Equations
RMAX e
VCC (Min) b VOH N1 (IOH) a N2 (IIH)
RMIN e
VCC (Max) b VOL IOL b N3 (IIL)
Where N1 (IOH) e total maximum output high current for all outputs tied to pull-up resistor
N2 (IIH) e total maximum input high current for all inputs tied to pull-up resistor
N3 (IIL) e total maximum input low current for all inputs tied to pull-up resistor
Connection Diagram
Dual-In-Line Package
Function Table
TL F 6513
- 1
Order Number DM5438J DM5438W DM7438M or DM7438N See NS Package Number J14A M14A N14A or W14B
Y e AB
Inputs
Output
LL LH HL HH
H e High Logic Level L e Low Logic Level
C1995 National Semiconductor Corporation TL F 6513
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
5 5V
Output Voltage
7V
Operating Free Air Temperature Range
DM54 b55 C to a125 C
DM74
0 C to a70 C
Storage Temperature Range b65 C to a150 C
Note 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’’ table are not guaranteed at the absolute maximum ratings The ‘‘Remended Operating Conditions’’ table will define the conditions for actual device operation
Remended Operating...