HIGH SPEED (TYP.) POWER DISSIPATION OUTPUT DRIVE CAPABILITY LSTTL LOAD

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HIGH SPEED (TYP.) POWER DISSIPATION OUTPUT DRIVE CAPABILITY LSTTL LOAD

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M54HCT138 M74HCT138
HIGH SPEED (TYP.) POWER DISSIPATION OUTPUT DRIVE CAPABILITY LSTTL LOADS BALANCED PROPAGATION DELAYS tPLH tPHL SYMMETRICAL OUTPUT IMPEDANCE |IOH| COMPATIBLE WITH OUTPUTS (MIN.) 0.8V (MAX) FUNCTION COMPATIBLE WITH 54/74LS138
(Plastic Package)
(Ceramic Package)
(Micro Package)
(Chip Carrier)
DESCRIPTION M54/74HC138 high speed CMOS LINE DECODER fabricated silicon gate 2MOS technology. same high speed performance LSTTL combined with true CMOSlow power consumption. device enabled, binary select inputs determine which outputs will low. enable input held either held high, decoding function inhibited outputs high. Three enable inputs provided ease cascade connection application address decoders memory systems. inputs equipped with protection circuits against static discharge tran- sient excess voltage.This integrated circuit input output characteristics that fully compatible with 54/74 LSTTL logic families. M54/74HCT devices designed directly interface systems with NMOS components. They also plug replacements LSTTL devices giving reduction power consumption. INPUT OUTPUT EQUIVALENT CIRCUIT
ORDER CODES M54HCT138F1R M74HCT138M1R M74HCT138B1R M74HCT138C1R
CONNECTIONS (top view)
Internal Connection
February 1993
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M54/M74HCT138
TRUTH TABLE
INPUTS ENABLE
Don't Care
SELECT
OUTPUTS
DESCRIPTION
SYMBOL G2A, NAME FUNCTION Address Inputs Enable Inputs Enable Input Outputs
LOGIC SYMBOL
Ground (0V) Positive Supply Voltage
LOGIC DIAGRAM
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M54/M74HCT138
ABSOLUTE MAXIMUM RATINGS
Symbol IGND Tstg Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Source Sink Current Output Ground Current Power Dissipation Storage Temperature Lead Temperature sec) Parameter Value -0.5 -0.5 -0.5 +150 Unit
Absolute Maximum Ratings those values beyond which damage device occur. Functional operation under these condition isnotimplied. derate 10mW/oC:
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Supply Voltage Input Voltage Output Voltage Operating Temperature: M54HC Series M74HC Series Input Rise Fall Time (VCC 5.5V) Value +125 Unit
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M54/M74HCT138
SPECIFICATIONS
Test Conditions Symbol Parameter IO=-20 IO=-4.0 Input 0.5V 2.4V Other Inputs 4.18 4.31 0.17 0.26 ±0.1 54HC 74HC Min. Typ. Max. Value 74HC 54HC Min. Max. Min. Max. Unit
High Level Input Voltage Level Input Voltage High Level Output Voltage
4.13 0.33
4.10
Level Output Voltage
Input Leakage Current Quiescent Supply Current Additional worst case supply current
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M54/M74HCT138
ELECTRICAL CHARACTERISTICS Input
Test Conditions Symbol Parameter 54HC 74HC Min. Typ. Max. Value 74HC 54HC Min. Max. Min. Max. Unit
tTLH tTHL tPLH tPHL tPLH tPHL tPLH tPHL
Output Transition Time Propagation Delay Time Propagation Delay Time Propagation Delay Time Input Capacitance Power Dissipation Capacitance
defined value IC's internal equivalent capacitance which calculated from operating current consumption without load. (Refer Test Circuit). Average operting current obtained following equation. ICC(opr)
SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT (Opr.)
INPUT WAVEFORM SAME THAT CASE SWITCHING CHARACTERISTICSTEST.
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M54/M74HCT138
Plastic DIP16 (0.25) MECHANICAL DATA
MIN. 1.27 2.54 17.78 0.130 0.050 0.51 0.77 0.25 0.335 0.100 0.700 0.280 0.201 1.65 TYP. MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 inch TYP. MAX.
DIM.
P001C
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M54/M74HCT138
Ceramic DIP16/1 MECHANICAL DATA
MIN. 2.29 1.17 0.22 0.51 0.38 17.78 2.79 0.55 1.52 0.31 1.27 10.3 8.05 5.08 0.307 0.090 0.016 0.046 0.009 0.020 0.015 0.700 0.110 0.022 0.060 0.012 0.050 0.406 0.317 0.200 TYP. MAX. 0.130 MIN. inch TYP. MAX. 0.787 0.276
DIM.
P053D
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M54/M74HCT138
SO16 (Narrow) MECHANICAL DATA
DIM. MIN. 1.27 8.89 1.27 0.62 (max.) 0.149 0.181 0.019 0.35 0.19 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 TYP. MAX. 1.75 1.65 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010
P013H
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M54/M74HCT138
PLCC20 MECHANICAL DATA
MIN. 1.27 1.14 7.37 1.27 5.08 0.38 0.101 0.050 0.045 9.78 8.89 2.54 0.56 8.38 0.290 0.050 0.200 0.015 0.004 TYP. MAX. 10.03 9.04 4.57 MIN. 0.385 0.350 0.165 0.100 0.022 0.330 inch TYP. MAX. 0.395 0.356 0.180
DIM.
P027A
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M54/M74HCT138
Information furnished believed accurate reliable. However, SGS-THOMSON Microelectronics assumes responsability consequences such information infringement patents other rights third parties which results from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized ascritical components life support devices systems without express written approval SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics Rights Reserved SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A
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HIGH SPEED (TYP.) POWER DISSIPATION OUTPUT DRIVE CAPABILITY LSTTL LOAD

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