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INTEGRATED CIRCUITS
74LV251 8-input multiplexer (3-State)
Product specification Supersedes data of 1997 Apr 10 IC24 Data Handbook 1998 May 20
Philips Semiconductors
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
FEATURES
* 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, * True and complement outputs * Both outputs are 3-State for further multiplexer expansion * Multifunction capability * Permits multiplexing from n-lines to one line * Output capability: standard * ICC category: MSI
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25C; tr = tf 2.5 ns SYMBOL PARAMETER Propagation delay In to Y In to Y Sn to Y Sn to Y Input capacitance Power dissipation capacitance per gate Tamb = 25C Tamb = 25C
DESCRIPTION
The 74LV251 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT251. The 74LV251 is an 8-input multiplexer with 8 binary inputs (I0 to I7), an output enable input (OE) and three select inputs (S0, S1, S2). One of the eight binary inputs is selected by the select inputs and is routed to the outputs (Y, Y). Both outputs are in the high impedance OFF-state (Z) when the output enable input is HIGH, allowing multiplexer expansion by tying the outputs.
CONDITIONS CL = 15 pF; VCC = 3.3 V
TYPICAL 14 16 19 20 3.5
UNIT
tPHL/tPLH
ns
CI CPD
pF pF
VCC = 3.3 V VI = GND to VCC1
44
NOTE: 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 74LV251 N 74LV251 D 74LV251 DB 74LV251 PW NORTH AMERICA 74LV251 N 74LV251 D 74LV251 DB 74LV251PW DH PKG. DWG. # SOT38-4 SOT109-1 SOT338-1 SOT403-1
1998 May 20
2
853-1967 19420
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
PIN CONFIGURATION
I3 I2 I1 I0 Y Y QE GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V CC I4 I5 I6 I7 S0 S1 S2
PIN DESCRIPTION
PIN NUMBER 4, 3, 2, 1, 15, 14, 13, 12 5 6 7 8 11, 10, 9 16
SV00629
SYMBOL I0 to I7 Y Y OE GND S0 to S2 VCC
FUNCTION Multiplexer inputs Multiplexer output Complementary multiplexer output 3-State output enable input (active LOW) Ground (0 V) Select inputs Positive supply voltage
LOGIC SYMBOL
11 S0 4 3 2 1 15 14 13 12 I0 I1 I2 I3 I4 I5 I6 I7 OE Y 6 10 S1 9
LOGIC SYMBOL (IEEE/IEC)
MUX 7 S2 11 10 9 4 Y 5 3 2 1 15 14 13 12 7 1 2 5 3 4 5 6 7 6 2 0 EN 0 G0 7
SV00630
SV00631
FUNCTIONAL DIAGRAM
4 3 2 1 15 14 13 12
I0 11 10 9 S0 S1
I1
I2
I3
I4
I5
I6
I7
MULTIPLEXER S2
7
OE
Y 6
Y 5
SV00632
1998 May 20
3
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
FUNCTION TABLE
INPUTS OE H L L L L L L L L L L L L L L L L S2 X L L L L L L L L H H H H H H H H S1 X L L L L H H H H L L L L H H H H S0 X L L H H L L H H L L H H L L H H I0 X L H X X X X X X X X X X X X X X I1 X X X L H X X X X X X X X X X X X I2 X X X X X L H X X X X X X X X X X I3 X X X X X X X L H X X X X X X X X I4 X X X X X X X X X L H X X X X X X I5 X X X X X X X X X X X L H X X X X I6 X X X X X X X X X X X X X L H X X I7 X X X X X X X X X X X X X X X L H OUTPUTS Y Z H L H L H L H L H L H L H L H L Y Z L H L H L H L H L H L H L H L H
NOTES: H = HIGH voltage level L = LOW voltage level X = don't care Z = high impedance OFF-state
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VI VO Tamb tr, tf 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 CONDITIONS See Note 1 MIN 1.0 0 0 -40 -40 - - - - - - TYP 3.3 - - MAX 3.6 VCC VCC +85 +125 500 200 100 UNIT V V V C ns/V
Input rise and fall times
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.
1998 May 20
4
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
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 PTOT 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 +4.6 20 50 25 UNIT V mA mA mA
50 -65 to +150 750 500 400
mA C 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.
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 = 1.2 V VIL LOW level Input voltage VCC = 2.0 V VCC = 2.7 to 3.6 V VCC = 1.2 V; VI = VIH or VIL; -IO = 100A VO OH HIGH level output voltage; all outputs VCC = 2.0 V; VI = VIH or VIL; -IO = 100A VCC = 2.7 V; VI = VIH or VIL; -IO = 100A VCC = 3.0 V; VI = VIH or VIL; -IO = 100A VOH HIGH level output voltage; STANDARD outputs VCC = 3.0 V; VI = VIH or VIL; -IO = 6mA VCC = 1.2 V; VI = VIH or VIL; IO = 100A VO OL LOW level output voltage; all outputs VCC = 2.0 V; VI = VIH or VIL; IO = 100A VCC = 2.7 V; VI = VIH or VIL; IO = 100A VCC = 3.0 V; VI = VIH or VIL; IO = 100A VOL LOW level output voltage; STANDARD outputs VCC = 3.0 V; VI = VIH or VIL; IO = 6mA 1.8 2.5 2.8 1.2 2.0 2.7 3.0 1.8 2.5 2.8 V 0.9 1.4 2.0 0.3 0.6 0.8 -40C to +85C TYP1 MAX -40C to +125C MIN 0.9 1.4 2.0 0.3 0.6 0.8 V V MAX UNIT
2.40
2.82
2.20
V
0 0 0 0 0.2 0.2 0.2 0.2 0.2 0.2 V
0.25
0.40
0.50
V
1998 May 20
5
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
DC ELECTRICAL CHARACTERISTICS (Continued)
LIMITS SYMBOL PARAMETER Input leakage current Quiescent supply current; MSI Additional quiescent supply current per input TEST CONDITIONS MIN II ICC ICC VCC = 3.6 V; VI = VCC or GND VCC = 3.6 V; VI = VCC or GND; IO = 0 VCC = 2.7 V to 3.6 V; VI = VCC - 0.6 V -40C to +85C TYP1 MAX 1.0 20.0 500 -40C to +125C MIN MAX 1.0 160 850 A A A UNIT
NOTE: 1. All typical values are measured at Tamb = 25C.
AC CHARACTERISTICS
GND = 0V; tr = tf = 2.5ns; CL = 50pF; RL = 1K SYMBOL PARAMETER WAVEFORM CONDITION VCC(V) 1.2 tPHL/tPLH / Propagation delay g y In to Y Figure 1 2.0 2.7 3.0 to 3.6 1.2 tPHL/tPLH / Propagation delay g y In to Y Figure 2 2.0 2.7 3.0 to 3.6 1.2 tPHL/tPLH / Propagation delay g y Sn to Y Figure 1 2.0 2.7 3.0 to 3.6 1.2 tPHL/tPLH / Propagation delay g y Sn to Y Figure 2 2.0 2.7 3.0 to 3.6 1.2 tPZH/tPZL / 3-State output disable time OE to Y, Y Figure 2 2.0 2.7 3.0 to 3.6 1.2 tPHZ/tPLZ / 3-State output disable time OE to Y, Y Figure 2 2.0 2.7 3.0 to 3.6 NOTES: 1. Unless otherwise stated, all typical values are measured at Tamb = 25C 2. Typical values are measured at VCC = 3.3 V. MIN LIMITS -40 to +85 C TYP1 90 31 23 172 100 34 25 192 120 41 30 232 125 43 31 242 65 22 16 122 60 22 17 132 39 29 24 48 36 29 ns 43 31 25 51 38 30 ns 82 60 48 97 71 57 ns 77 56 45 92 68 54 ns 65 48 38 77 56 45 ns 58 43 34 70 51 41 ns MAX -40 to +125 C MIN MAX UNIT
1998 May 20
6
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
AC WAVEFORMS
VM = 1.5 V at VCC 2.7 V VM = 0.5 V x VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. VX = VOL + 0.3 V at VCC 2.7 V VX = VOL + 0.1 x VCC at VCC < 2.7 V VY = VOH - 0.3 V at VCC 2.7V VY = VOH - 0.1 x VCC at VCC < 2.7 V
V CC I n , S n INPUT GND t PHL V OH Y OUTPUT V OL VM t PLH VM V OH OUTPUT HIGH-to-OFF OFF-to-HIGH GND outputs enabled V CC OE INPUT GND tPLZ V CC OUTPUT LOW-to-OFF OFF-to-LOW V OL tPHZ VM VX tPZH tPZL VM
VY VM outputs disabled outputs enabled
SV00635 SV00633
Figure 3. 3-State enable and disable times Figure 1. Multiplexer input (In) and select input (Sn) to output (Y) propagation delays.
TEST CIRCUIT
VCC
V CC In, Sn INPUT GND t PHL V OH Y OUTPUT V OL VM t PLH VM VI PULSE GENERATOR RT
VO D.U.T. 50pF CL RL= 1K
Test Circuit for switching times
SV00634
Figure 2. Multiplexer input (In) and the select input (Sn) to output (Y) propagation delays.
DEFINITIONS
RT = Termination resistance should be equal to ZOUT of pulse generators. RL = Load resistor CL = Load capacitance includes jig and probe capacitance TEST tPLH/tPHL VCC < 2.7V 2.7-3.6V VI VCC 2.7V
SV00776
Figure 4. Load circuitry for switching times.
1998 May 20
7
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
1998 May 20
8
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
1998 May 20
9
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
1998 May 20
10
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
1998 May 20
11
Philips Semiconductors
Product specification
8-input multiplexer (3-State)
74LV251
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 9397-750-04439
Philips Semiconductors
1998 May 20 12

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