74HCT138N Philips Semiconductors, 74HCT138N Datasheet

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74HCT138N

Manufacturer Part Number
74HCT138N
Description
DECODER/DEMULTIPLEXER; PDIP; 3 TO 8 DECODER/DEMULTIPLEXER LOGIC; +5V; -40; +125
Manufacturer
Philips Semiconductors
Datasheet

Specifications of 74HCT138N

Capacitance, Input
3.5 pF (Typ.)
Circuit Type
High Speed, Low-Power Schottky, Silicon Gate
Current, Supply
160 μA
Function Type
3-Inputs
Logic Function
Decoder/Demultiplexer/Inverter
Logic Type
CMOS/TTL
Package Type
DIP-16
Special Features
3 to 8 Line
Temperature, Operating, Range
-40 to +125 °C
Time, Delay, Propagation (high-to-low Level Output)
17 ns (Typ.)
Time, Delay, Propagation (low-to-high Level Output)
17 ns (Typ.)
Voltage, Supply
5 V
Output Capability
standard
Lead Free Status / Rohs Status
RoHS Compliant part Electrostatic Device

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1. General description
2. Features
The 74HC138; 74HCT138 is a high-speed Si-gate CMOS device and is pin compatible
with Low-power Schottky TTL (LSTTL).
The 74HC138; 74HCT138 decoder accepts three binary weighted address inputs (A0, A1
and A3) and when enabled, provides 8 mutually exclusive active LOW outputs (Y0 to Y7).
The 74HC138; 74HCT138 features three enable inputs: two active LOW (E1 and E2) and
one active HIGH (E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is
HIGH.
This multiple enable function allows easy parallel expansion of the 74HC138; 74HCT138
to a 1-of-32 (5 lines to 32 lines) decoder with just four 74HC138; 74HCT138 ICs and one
inverter.
The 74HC138; 74HCT138 can be used as an eight output demultiplexer by using one of
the active LOW enable inputs as the data input and the remaining enable inputs as
strobes. Not used enable inputs must be permanently tied to their appropriate active
HIGH- or LOW-state.
The 74HC138; 74HCT138 is identical to the 74HC238; 74HCT238 but has inverting
outputs.
74HC138; 74HCT138
3-to-8 line decoder/demultiplexer; inverting
Demultiplexing capability
Multiple input enable for easy expansion
Complies with JEDEC standard no. 7A
Ideal for memory chip select decoding
Active LOW mutually exclusive outputs
ESD protection:
Specified from 40 C to +85 C and from 40 C to +125 C
HBM EIA/JESD22-A114-C exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V
Product data sheet

Related parts for 74HCT138N

74HCT138N Summary of contents

Page 1

General description The 74HC138; 74HCT138 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). The 74HC138; 74HCT138 decoder accepts three binary weighted address inputs (A0, A1 and ...

Page 2

... Philips Semiconductors 3. Quick reference data Table 1: GND = Symbol Parameter 74HC138 t , PHL t PLH 74HCT138 t , PHL t PLH [ input frequency in MHz output frequency in MHz output load capacitance in pF number of inputs switching Ordering information Table 2: Ordering information Type number Package Temperature range Name 74HC138 74HC138N ...

Page 3

... Philips Semiconductors Table 2: Ordering information Type number Package Temperature range Name 74HCT138 74HCT138N +125 C 74 HCT138D +125 C 74HCT138DB +125 C 74HCT138PW +125 C 74HCT138BQ +125 C 5. Functional diagram Fig 1. Logic symbol 74HC_HCT138_3 Product data sheet …continued Description DIP16 plastic dual in-line package; 16 leads (300 mil); ...

Page 4

... Philips Semiconductors 8. Limiting values Table 5: In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol GND T stg P tot [1] For DIP16 package: P [2] For SO16 package: P [3] For SSOP16 and TSSOP16 packages: P [4] For DHVQFN16 packages ...

Page 5

... Philips Semiconductors Table 8: Static characteristics 74HCT138 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter amb V HIGH-state input voltage IH V LOW-state input voltage IL V HIGH-state output voltage OH V LOW-state output voltage OL I input leakage current LI I OFF-state output current ...

Page 6

... Philips Semiconductors Table 8: Static characteristics 74HCT138 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter +125 C amb V HIGH-state input voltage IH V LOW-state input voltage IL V HIGH-state output voltage OH V LOW-state output voltage OL I input leakage current LI I OFF-state output current ...

Page 7

... Philips Semiconductors Table 10: Voltages are referenced to GND (ground = 0 V); C For test circuit see Symbol Parameter amb t , PHL t PLH t , THL t TLH +85 C amb t , PHL t PLH t , THL t TLH +125 C amb t , PHL t PLH t , THL t TLH [ input frequency in MHz output frequency in MHz output load capacitance in pF; ...

Page 8

... Philips Semiconductors 13. Package outline DIP16: plastic dual in-line package; 16 leads (300 mil); long body pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions UNIT max. min. max. mm 4.7 0.51 3.7 inches 0.19 0.02 0.15 Note 1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included. ...

Page 9

... Philips Semiconductors SSOP16: plastic shrink small outline package; 16 leads; body width 5 pin 1 index 1 e DIMENSIONS (mm are the original dimensions) A UNIT max. 0.21 1. 0.25 0.05 1.65 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION IEC SOT338-1 Fig 12. Package outline SOT338-1 (SSOP16) ...

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