m74hc138 STMicroelectronics, m74hc138 Datasheet

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m74hc138

Manufacturer Part Number
m74hc138
Description
3 To 8 Line Decoder Inverting
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
The M74HC138 is an high speed CMOS 3 TO 8
LINE DECODER fabricated with silicon gate
C
If the device is enabled, 3 binary select inputs (A,
B, and C) determine which one of the outputs will
go low. If enable input G1 is held low or either G2A
or G2B is held high, the decoding function is
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
2
MOS technology.
HIGH SPEED:
t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
WIDE OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 138
PD
CC
PLH
OH
NIH
CC
= 13ns (TYP.) at V
= 4 A(MAX.) at T
| = I
(OPR) = 2V to 6V
= V
t
PHL
OL
NIL
= 4mA (MIN)
= 28 % V
A
CC
CC
=25°C
(MIN.)
= 6V
3 TO 8 LINE DECODER (INVERTING)
ORDER CODES
inhibited and all the 8 outputs go high. Three
enable inputs are provided to ease cascade
connection and application of address decoders
for memory systems.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PACKAGE
TSSOP
SOP
DIP
DIP
M74HC138M1R
M74HC138B1R
TUBE
SOP
M74HC138
M74HC138RM13TR
M74HC138TTR
T & R
TSSOP
1/10

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m74hc138 Summary of contents

Page 1

... V (OPR PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 138 DESCRIPTION The M74HC138 is an high speed CMOS LINE DECODER fabricated with silicon gate 2 C MOS technology. If the device is enabled, 3 binary select inputs (A, B, and C) determine which one of the outputs will go low ...

Page 2

... M74HC138 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS ENABLE SELECT G2B G2A Don’t Care LOGIC DIAGRAM ...

Page 3

... Supply Voltage CC V Input Voltage I V Output Voltage O T Operating Temperature op Input Rise and Fall Time Parameter Parameter 6.0V CC M74HC138 Value Unit - 500(*) mW -65 to +150 °C 300 °C ...

Page 4

... M74HC138 DC SPECIFICATIONS Symbol Parameter V V High Level Input IH Voltage V Low Level Input IL Voltage V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage I Current I Quiescent Supply CC Current AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter Output Transition TLH THL Time t t Propagation Delay PLH ...

Page 5

... T OUT WAVEFORM 1: PROPAGATION DELAYS FOR INVERTING OUTPUTS (f=1MHz; 50% duty cycle) Test Condition (V) Min. 5.0 5.0 Value = 25°C -40 to 85°C -55 to 125°C Typ. Max. Min. Max. Min CC(opr M74HC138 Unit Max 5/10 ...

Page 6

... M74HC138 WAVEFORM 2: PROPAGATION DELAYS FOR NON-INVERTING OUTPUTS (f=1MHz; 50% duty cycle) 6/10 ...

Page 7

... Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 0. 17. TYP MAX. MIN. 0.020 1.65 0.030 0.5 0.25 20 8.5 2.54 7.1 5.1 3.3 1.27 M74HC138 inch TYP. MAX. 0.065 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 P001C 7/10 ...

Page 8

... M74HC138 DIM. MIN 0 0. 9 3.8 G 4 8/10 SO-16 MECHANICAL DATA mm. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.5 45° (typ.) 10 6.2 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) inch MIN. TYP. MAX. 0.068 0.003 0.007 0.064 0.013 0.018 0.007 0.010 0.019 0.385 0.393 0.228 0.244 0.050 0.350 0.149 0.157 ...

Page 9

... PIN 1 IDENTIFICATION 1 mm. TYP MAX. 1.2 0.15 1 1.05 0.30 0.20 5 5.1 6.4 6.6 4.4 4.48 0.65 BSC 8° 0.60 0. M74HC138 inch MIN. TYP. MAX. 0.047 0.002 0.004 0.006 0.031 0.039 0.041 0.007 0.012 0.004 0.0089 0.193 0.197 0.201 0.244 0.252 0.260 0.169 0.173 0.176 0.0256 BSC 0° 0.018 0.024 ...

Page 10

... M74HC138 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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