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I74F38N-N74F38D
Quad 2-input NAND buffer (open collector)
Product specification
IC15 Data Handbook
1990 Oct 04
Philips Semiconductors Product specification
74F38Quad 2-input NAND buffer (open collector)
FEATURE Industrial temperature range available (–40°C to +85°C)
PIN CONFIGURATION
ORDERING INFORMATION
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
NOTES: One (1.0) FAST unit load is defined as: 20μA in the high state and 0.6mA in the low state. OC = open collector
LOGIC DIAGRAM
FUNCTION TABLE
NOTES:= High voltage level= Low voltage level
LOGIC SYMBOL
IEC/IEEE SYMBOL
Philips Semiconductors Product specification
74F38Quad 2-input NAND buffer (open collector)
ABSOLUTE MAXIMUM RATINGS(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
RECOMMENDED OPERATING CONDITIONS
DC ELECTRICAL CHARACTERISTICS(Over recommended operating free-air temperature range unless otherwise noted.)
NOTES: For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. All typical values are at VCC = 5V, Tamb = 25°C.
Philips Semiconductors Product specification
74F38Quad 2-input NAND buffer (open collector)
AC ELECTRICAL CHARACTERISTICS
AC WAVEFORMS
Waveform 1. Propagation delay for inverting outputs
NOTE:For all waveforms, VM = 1.5V.
TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS
NOTE: When using open collector parts, the value of the pull-up resistor greatly affects the value of the tPLH. For example, changing the specified
pull-up resistor value from 500Ω to 100Ω will improve the tPLH up to 50% with only a slight increase in the tPHL. However, if the value of the
Philips Semiconductors Product specification
74F38Quad 2-input NAND buffer (open collector)
TEST CIRCUIT AND WAVEFORM
Philips Semiconductors Product specification
74F38Quad 2-input NAND buffer (open collector)
DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1
