m74hct138 STMicroelectronics, m74hct138 Datasheet

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m74hct138

Manufacturer Part Number
m74hct138
Description
3 To 8 Line Decoder Inverting
Manufacturer
STMicroelectronics
Datasheet

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Part Number:
m74hct138B1
Manufacturer:
ST
0
Part Number:
m74hct138B1R
Manufacturer:
STM
Quantity:
2 500
Part Number:
m74hct138M1R
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ST
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Part Number:
m74hct138RM13TR
Manufacturer:
EPSON
Quantity:
66
Part Number:
m74hct138RM13TR
Manufacturer:
ST
0
DESCRIPTION
The M74HCT138 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
inhibited and all the 8 outputs go high. Three
PIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
2
MOS technology.
HIGH SPEED:
t
LOW POWER DISSIPATION:
I
COMPATIBLE WITH TTL OUTPUTS :
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 138
PD
CC
PLH
OH
IH
= 16ns (TYP.) at V
= 4 A(MAX.) at T
= 2V (MIN.) V
| = I
t
PHL
OL
= 4mA (MIN)
IL
= 0.8V (MAX)
A
CC
=25°C
= 4.5V
3 TO 8 LINE DECODER (INVERTING)
ORDER CODES
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
M74HCT138M1R M74HCT138RM13TR
M74HCT138B1R
TUBE
M74HCT138
SOP
M74HCT138TTR
T & R
TSSOP
1/9

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m74hct138 Summary of contents

Page 1

... PLH PHL PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 138 DESCRIPTION The M74HCT138 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

... M74HCT138 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUTS ENABLE SELECT G2B G2A Don’t Care LOGIC DIAGRAM ...

Page 3

... O I =4 GND GND I CC Per Input pin 2.4V I Other Inputs GND M74HCT138 Value Unit -0 -0 0 500(*) mW -65 to +150 °C 300 °C Value Unit 4 ...

Page 4

... M74HCT138 AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter Output Transition TLH THL 4.5 Time t t Propagation Delay PLH PHL 4.5 Time ( Propagation Delay PLH PHL 4.5 Time ( Propagation Delay PLH PHL 4.5 Time ( CAPACITIVE CHARACTERISTICS Symbol Parameter V CC (V) C Input Capacitance ...

Page 5

... WAVEFORM 1: PROPAGATION DELAYS FOR INVERTING OUTPUTS (f=1MHz; 50% duty cycle) WAVEFORM 2: PROPAGATION DELAYS FOR NON-INVERTING OUTPUTS (f=1MHz; 50% duty cycle) M74HCT138 5/9 ...

Page 6

... M74HCT138 Plastic DIP-16 (0.25) MECHANICAL DATA DIM. MIN. a1 0. 6/9 mm. TYP MAX. MIN. 0.020 1.65 0.030 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 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 ...

Page 7

... 0.35 b1 0. 9.8 E 5.8 e 1.27 e3 8.89 F 3.8 G 4 inch MAX. MIN. TYP. 1.75 0.2 0.003 1.65 0.46 0.013 0.25 0.007 0.019 45° ( typ.) 10 0.385 6.2 0.228 0.050 0.350 4.0 0.149 5.3 0.181 1.27 0.019 0.62 8° (max.) M74HCT138 MAX. 0.068 0.007 0.064 0.018 0.010 0.393 0.244 0.157 0.208 0.050 0.024 PO13H 7/9 ...

Page 8

... M74HCT138 TSSOP16 MECHANICAL DATA DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 4.9 E 6 0° PIN 1 IDENTIFICATION 1 8/9 mm. TYP MAX. MIN. 1.2 0.15 0.002 1 1.05 0.031 0.30 0.007 0.20 0.004 5 5.1 0.193 6.4 6.6 0.244 4.4 4.48 0.169 0.65 BSC 8° 0.60 0.75 0.018 inch TYP. MAX. 0.047 0.004 0.006 0.039 0.041 0.012 ...

Page 9

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