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INTEGRATED CIRCUITS
74LV138 3-to-8 line decoder/multiplexer; inverting
Product specification Supersedes data of 1997 Feb 03 IC24 Data Handbook 1998 Apr 28
Philips Semiconductors
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
FEATURES
* Wide operating voltage: 1.0 to 5.5 V * Optimized for low voltage applications: 1.0 to 3.6 V * Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V * Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, * Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, * Demultiplexing capability * Multiple input enable for easy expansion * Ideal for memory chip select decoding * Active LOW mutually exclusive outputs * Output capability: standard * ICC category: MSI
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25C; tr = tf 2.5 ns SYMBOL tPHL/tPLH CI CPD PARAMETER Propagation delay An to Yn, E3 to Yn, En to Yn Input capacitance Power dissipation capacitance per package Tamb = 25C Tamb = 25C
DESCRIPTION
The 74LV138 is a low-voltage Si-gate CMOS device that is pin and function compatible with 74HC/HCT138. The 74LV138 accepts three binary weighted address inputs (A0, A1, A2) and when enabled, provide 8 mutually exclusive active LOW outputs (Y0 to Y7). The 74LV138 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 74LV138 to a 1-of-32 (5 lines to 32 lines) decoder with just four 74LV138 ICs and one inverter. The 74LV138 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. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state. The 74LV138 is identical to the 74LV238 but has non-inverting (true) outputs.
CONDITIONS CL = 15 pF; VCC = 3.3 V
TYPICAL 12 14 3.5
UNIT ns ns pF pF
VCC = 3.3 V VI = GND to VCC1
45
NOTES: 1. CPD is used to determine the dynamic power dissipation (PD in W) PD = CPD x VCC2 x fi ) (CL x VCC2 x fo) where: fi = input frequency in MHz; CL = output load capacitance in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL x VCC2 x fo) = sum of the outputs.
ORDERING INFORMATION
PACKAGES 16-Pin Plastic DIL 16-Pin Plastic SO 16-Pin Plastic SSOP Type II 16-Pin Plastic TSSOP Type I TEMPERATURE RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C OUTSIDE NORTH AMERICA 74LV138 N 74LV138 D 74LV138 DB 74LV138 PW NORTH AMERICA 74LV138 N 74LV138 D 74LV138 DB 74LV138PW DH PKG. DWG. # SOT38-4 SOT109-1 SOT338-1 SOT403-1
PIN CONFIGURATION
A0 A1 A2 E1 E2 E3 Y7 GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC Y0 Y1 Y2 Y3 Y4 Y5 Y6
PIN DESCRIPTION
PIN NUMBER 1, 2, 3 4, 5 6 SYMBOL A0 to A2 E1 to E2 E3 FUNCTION Address inputs Enable inputs (active LOW) Enable inputs (active HIGH) Outputs Ground (0 V) Positive supply voltage
15, 14, 13, 12, Y0 to Y7 11, 10, 9, 7 8 16 GND VCC
SV00524
1998 Apr 28
2
853-1903 19290
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
LOGIC DIAGRAM
1 2 3 A0 A1 A2 Y0 Y1 Y2 Y3 Y4 4 E1 5 6 Y7 7 E2 E3 Y6 9 Y5 10 15 14 13 12
LOGIC SYMBOL (IEEE/IEC)
DX 0 1 0 G 0 7 15 1 2 1 X Y 0 15 14 13 12
1 2 3
14 13 12
1
2 3 2
2
2 3
3
4
11
4
11
4
11
4
&
5
10
4
&
5
10
5
6
9
5 EN
6
9
6
7
7
6 (b)
7
7
SV00525
(a)
SV00526
FUNCTIONAL DIAGRAM
Y0 A0 A1 A2 3-to-8 DECODER ENABLE EXITING Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 Y7 E1 4 5 6 E2 E3 9 7 2 3 15
1
SV00527
FUNCTION TABLE
INPUTS E1 H X X L L L L L L L L E2 X H X L L L L L L L L E3 X X L H H H H H H H H A0 X X X L H L H L H L H A1 X X X L L H H L L H H A2 X X X L L L L H H H H Y0 H H H L H H H H H H H Y1 H H H H L H H H H H H Y2 H H H H H L H H H H H OUTPUTS Y3 H H H H H H L H H H H Y4 H H H H H H H L H H H Y5 H H H H H H H H L H H Y6 H H H H H H H H H L H Y7 H H H H H H H H H H L
NOTES: H = HIGH voltage level L = LOW voltage level X = don't care 1998 Apr 28 3
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VI VO Tamb PARAMETER DC supply voltage Input voltage Output voltage Operating ambient temperature range in free air See DC and AC characteristics VCC = 1.0V to 2.0V VCC = 2.0V to 2.7V VCC = 2.7V to 3.6V VCC = 3.6V to 5.5V CONDITIONS See Note 1 MIN 1.0 0 0 -40 -40 - - - - - - - - TYP 3.3 - - MAX 5.5 VCC VCC +85 +125 500 200 100 50 UNIT V V V C
tr, tf
Input rise and fall times
ns/V
NOTE: 1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.
ABSOLUTE MAXIMUM RATINGS1, 2
In accordance with the Absolute Maximum Rating System (IEC 134). Voltages are referenced to GND (ground = 0 V). SYMBOL VCC "IIK "IOK "IO "IGND, "ICC Tstg PARAMETER DC supply voltage DC input diode current DC output diode current DC output source or sink current - standard outputs DC VCC or GND current for types with - standard outputs Storage temperature range Power dissipation per package - plastic DIL - plastic mini-pack (SO) - plastic shrink mini-pack (SSOP and TSSOP) for temperature range: -40 to +125C above +70C derate linearly with 12 mW/K above +70C derate linearly with 8 mW/K above +60C derate linearly with 5.5 mW/K VI < -0.5 or VI > VCC + 0.5V VO < -0.5 or VO > VCC + 0.5V -0.5V < VO < VCC + 0.5V CONDITIONS RATING -0.5 to +7.0 20 50 25 UNIT V mA mA mA
50 -65 to +150 750 500 400
mA C
PTOT
mW
NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1998 Apr 28
4
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V). LIMITS SYMBOL PARAMETER TEST CONDITIONS MIN VCC = 1.2 V VIH HIGH level Input voltage VCC = 2.0 V VCC = 2.7 to 3.6 V VCC = 4.5 to 5.5 V VCC = 1.2 V VIL LOW level Input voltage VCC = 2.0 V VCC = 2.7 to 3.6 V VCC = 4.5 to 5.5 VCC = 1.2 V; VI = VIH or VIL; -IO = 100A VCC = 2.0 V; VI = VIH or VIL; -IO = 100A VOH HIGH l level output ltt voltage out uts voltage; all outputs VCC = 2.7 V; VI = VIH or VIL; -IO = 100A VCC = 3.0 V; VI = VIH or VIL; -IO = 100A VCC = 4.5 V; VI = VIH or VIL; -IO = 100A VO OH HIGH level output g voltage; STANDARD outputs VCC = 3.0 V; VI = VIH or VIL; -IO = 6mA VCC = 4.5 V; VI = VIH or VIL; -IO = 12mA VCC = 1.2 V; VI = VIH or VIL; IO = 100A VCC = 2.0 V; VI = VIH or VIL; IO = 100A VOL LOW l ltt level output voltage out uts voltage; all outputs VCC = 2.7 V; VI = VIH or VIL; IO = 100A VCC = 3.0 V; VI = VIH or VIL; IO = 100A VCC = 4.5 V; VI = VIH or VIL; IO = 100A VO OL LOW level output voltage; g STANDARD outputs Input leakage current Quiescent supply current; MSI Additional quiescent supply current per input VCC = 3.0 V; VI = VIH or VIL; IO = 6mA VCC = 4.5 V; VI = VIH or VIL; IO = 12mA VCC = 5.5 V; VI = VCC or GND VCC = 5.5 V; VI = VCC or GND; IO = 0 VCC = 2.7 V to 3.6 V; VI = VCC - 0.6 V 1.8 2.5 2.8 4.3 2.40 3.60 1.2 2.0 2.7 3.0 4.5 2.82 4.20 0 0 0 0 0 0.25 0.35 0.2 0.2 0.2 0.2 0.40 0.55 1.0 20.0 500 0.2 0.2 0.2 0.2 0.50 V 0.65 1.0 160 850 A A A V 1.8 2.5 2.8 4.3 2.20 V 3.50 V 0.9 1.4 2.0 0.7II ICC ICC
NOTE: 1. All typical values are measured at Tamb = 25C.
1998 Apr 28
5
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
AC CHARACTERISTICS
GND = 0V; tr = tf = 2.5ns; CL = 50pF; RL = 500 SYMBOL PARAMETER WAVEFORM CONDITION VCC(V) 1.2 2.0 tPHL/tPLH Propagation delay An to Yn Figures 1, 3 2.7 3.0 to 3.6 4.5 to 5.5 1.2 2.0 tPHL/tPLH Propagation delay E3 to Yn Figures 1, 3 2.7 3.0 to 3.6 4.5 to 5.5 1.2 2.0 tPHL/tPLH Propagation delay En to Yn Figures 2, 3 2.7 3.0 to 3.6 4.5 to 5.5 NOTES: 1. Unless otherwise stated, all typical values are measured at Tamb = 25C 2. Typical values are measured at VCC = 3.3 V. 3. Typical values are measured at VCC = 5.0 V. 75 26 19 152 43 30 25 19 53 38 31 24 ns MIN LIMITS -40 to +85 C TYP1 75 26 19 152 -3 75 26 19 152 43 30 25 19 53 38 31 24 ns 44 31 26 17 55 39 32 22 ns MAX -40 to +125 C MIN MAX UNIT
AC WAVEFORMS
VM = 1.5 V at VCC 2.7 V and 3.6 V; VM = 0.5 V x VCC at VCC < 2.7 V and 4.5 V; VOL and VOH are the typical output voltage drop that occur with the output load.
VCC An, E3 INPUT GND tPHL VOH Yn OUTPUT VOL VM tPLH VM VOH Yn OUTPUT VOL VM VCC E1, E2 INPUT GND tPHL tPLH VM
SV00529
Figure 2. Enable input (En) to output (Yn) propagation delays.
SV00528
Figure 1. Input (An) and enable input (E3) to output (Yn) propagation delays.
1998 Apr 28
6
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
TEST CIRCUIT
Vcc
Vl PULSE GENERATOR RT D.U.T.
VO
50pF CL
RL= 1k
Test Circuit for Outputs DEFINITIONS
RL = Load resistor CL = Load capacitance includes jig and probe capacitiance RT = Termination resistance should be equal to ZOUT of pulse generators.
TEST tPLH/tPHL
VCC < 2.7V 2.7-3.6V 4.5 V
VI VCC 2.7V VCC
SV00902
Figure 3. Load circuitry for switching times.
1998 Apr 28
7
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
1998 Apr 28
8
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
1998 Apr 28
9
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
1998 Apr 28
10
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
1998 Apr 28
11
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer; inverting
74LV138
DEFINITIONS
Data Sheet Identification
Objective Specification
Product Status
Formative or in Design
Definition
This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product.
Preliminary Specification
Preproduction Product
Product Specification
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 (c) Copyright Philips Electronics North America Corporation 1998 All rights reserved. Printed in U.S.A. print code Document order number: Date of release: 05-96 9397-750-04423
Philips Semiconductors
1998 Apr 28 12

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