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SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
D D D D D
Operate From 1.65 V to 3.6 V Inputs Accept Voltages to 5.5 V Max tpd of 4.6 ns at 3.3 V Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25C Typical VOHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25C
D Latch-Up Performance Exceeds 250 mA Per D
JESD 17 ESD Protection Exceeds JESD 22 - 2000-V Human-Body Model (A114-A) - 200-V Machine Model (A115-A)
8
9
8
9
GND
3Y
NC - No internal connection
description/ordering information
These quadruple 2-line to 1-line data selectors/multiplexers are designed for 1.65-V to 3.6-V VCC operation. The 'LVC257A devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at a high logic level. ORDERING INFORMATION
TA PACKAGE QFN - RGY Reel of 1000 Tube of 40 SOIC - D -40 C 85C -40C to 85 C SOP - NS SSOP - DB Reel of 2500 Reel of 250 Reel of 2000 Reel of 2000 Tube of 90 TSSOP - PW CDIP - J -55 C 125C -55C to 125 C CFP - W LCCC - FK Reel of 2000 Reel of 250 Tube of 25 Tube of 150 Tube of 55 ORDERABLE PART NUMBER SN74LVC257ARGYR SN74LVC257AD SN74LVC257ADR SN74LVC257ADT SN74LVC257ANSR SN74LVC257ADBR SN74LVC257APW SN74LVC257APWR SN74LVC257APWT SNJ54LVC257AJ SNJ54LVC257AW SNJ54LVC257AFK SNJ54LVC257AJ SNJ54LVC257AW SNJ54LVC257AFK LC257A LVC257A LC257A LVC257A TOP-SIDE MARKING LC257A
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
On products compliant to MIL PRF 38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
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2Y GND NC 3Y 3B
A/B 1A 1B 1Y 2A 2B 2Y GND
1 2 3 4 5 6 7
16 15 14 13 12 11 10
VCC OE 4A 4B 4Y 3A 3B 3Y
1
16 15 14 13 12 11 10
VCC
A/B
1A A/B NC VCC OE OE 4A 4B 4Y 3A 3B 1B 1Y NC 2A 2B
3 4 5 6 7 8 2 1 20 19 18 17 16 15 14 9 10 11 12 13
SN54LVC257A . . . J OR W PACKAGE SN74LVC257A . . . D, DB, NS, OR PW PACKAGE (TOP VIEW)
SN74LVC257A . . . RGY PACKAGE (TOP VIEW)
SN54LVC257A . . . FK PACKAGE (TOP VIEW)
1A 1B 1Y 2A 2B 2Y
2 3 4 5 6 7
4A 4B NC 4Y 3A
1
SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
description/ordering information (continued)
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FUNCTION TABLE INPUTS OE H L L L L A/B X L L H H A X L H X X B X X X L H OUTPUT Y Z L H L H
logic diagram (positive logic)
OE 15
A/B
1
1A
2 4 3 1Y
1B
2A
5 7 6 2Y
2B
3A
11 9 10 3Y
3B
4A
14 12 13 4Y
4B
Pin numbers shown are for the D, DB, J, NS, PW, RGY, and W packages.
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SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 6.5 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 6.5 V Output voltage range, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 mA Continuous output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Package thermal impedance, JA (see Note 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73C/W (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82C/W (see Note 3): NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64C/W (see Note 3): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108C/W (see Note 4): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C
Stresses beyond those listed under "absolute maximum ratings" 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. NOTES: 1. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The value of VCC is provided in the recommended operating conditions table. 3. The package thermal impedance is calculated in accordance with JESD 51-7. 4. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions (see Note 5)
SN54LVC257A MIN Operating VCC Supply voltage Data retention only VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 2.7 V to 3.6 V 0 0 VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3 V VCC = 1.65 V VCC = 2.3 V VCC = 2.7 V VCC = 3 V 12 24 10 -12 -24 2 1.5 MAX 3.6 SN74LVC257A MIN 1.65 1.5 0.65 x VCC 1.7 2 2 0.35 x VCC 0.7 0.8 5.5 VCC 0 0 0.8 5.5 VCC -4 -8 -12 -24 4 8 12 24 10 ns/V mA mA V V V V MAX 3.6 V UNIT
VIH
High-level input voltage
VIL VI VO
Low-level input voltage Input voltage Output voltage
IOH
High-level output current
IOL
Low-level output current
t/v
Input transition rise or fall rate
TA Operating free-air temperature -55 125 -40 85 C NOTE 5: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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3
SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS IOH = -100 A IOH = -100 A VOH IOH = -4 mA IOH = -8 mA IOH = -12 mA IOH = -24 mA IOL = 100 A A VOL IOL = 4 mA IOL = 8 mA IOL = 12 mA IOL = 24 mA II IOZ ICC ICC Ci VI = 5.5 V or GND VO = VCC or GND VI = VCC or GND, IO = 0 One input at VCC - 0.6 V, Other inputs at VCC or GND VI = VCC or GND VCC 1.65 V to 3.6 V 2.7 V to 3.6 V 1.65 V 2.3 V 2.7 V 3V 3V 1.65 V to 3.6 V 2.7 V to 3.6 V 1.65 V 2.3 V 2.7 V 3V 3.6 V 3.6 V 3.6 V 2.7 V to 3.6 V 3.3 V 3.3 V 5 5 0.4 0.55 5 15 10 500 5 5 0.2 0.45 0.7 0.4 0.55 5 10 10 500 A A A A pF pF V 2.2 2.4 2.2 VCC-0.2 1.2 1.7 2.2 2.4 2.2 0.2 V MIN SN54LVC257A TYP MAX MIN SN74LVC257A TYP MAX UNIT
VCC-0.2
Co VO = VCC or GND All typical values are at VCC = 3.3 V, TA = 25C.
switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN54LVC257A PARAMETER FROM (INPUT) A or B tpd ten tdis tsk(o) A/B OE OE Y Y Y TO (OUTPUT) VCC = 2.7 V MIN MAX 5.4 7.5 6.7 4.7 VCC = 3.3 V 0.3 V MIN 1 1 1 0.5 MAX 4.6 6.4 5.6 4.3 1 ns ns ns ns UNIT
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SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
SN74LVC257A PARAMETER FROM (INPUT) A or B tpd ten tdis tsk(o) A/B OE OE Y Y Y TO (OUTPUT) VCC = 1.8 V 0.15 V MIN 1 1 1 1 MAX 13.5 15.6 14.6 15.4 VCC = 2.5 V 0.2 V MIN 1 1 1 1 MAX 7.4 9.5 8.7 6.7 VCC = 2.7 V MIN 1 1 1 1 MAX 5.4 7.5 6.7 4.7 VCC = 3.3 V 0.3 V MIN 1 1 1 1 MAX 4.6 6.4 5.6 4.3 1 ns ns ns ns UNIT
operating characteristics, TA = 25C
PARAMETER Cpd Power dissipation capacitance TEST CONDITIONS f = 10 MHz VCC = 1.8 V TYP 13.5 VCC = 2.5 V TYP 14.5 VCC = 3.3 V TYP 15.5 UNIT pF
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SCAS294N - JANUARY 1993 - REVISED OCTOBER 2003
SN54LVC257A, SN74LVC257A QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS WITH 3 STATE OUTPUTS
PARAMETER MEASUREMENT INFORMATION
RL S1 VLOAD Open GND RL TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open VLOAD GND
From Output Under Test CL (see Note A)
LOAD CIRCUIT INPUTS VCC 1.8 V 0.15 V 2.5 V 0.2 V 2.7 V 3.3 V 0.3 V VI VCC VCC 2.7 V 2.7 V tr/tf 2 ns 2 ns 2.5 ns 2.5 ns VM VCC/2 VCC/2 1.5 V 1.5 V VLOAD 2 x VCC 2 x VCC 6V 6V CL 30 pF 30 pF 50 pF 50 pF RL 1 k 500 500 500 V 0.15 V 0.15 V 0.3 V 0.3 V VI Timing Input tw VI Input VM VM 0V VOLTAGE WAVEFORMS PULSE DURATION VI Input tPLH Output tPHL VM VM VM VM 0V tPHL VOH VM VOL tPLH VOH Output VM VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS Output Waveform 2 S1 at GND (see Note B) Output Control tPZL VM tPZH VM VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VI VM VM 0V tPLZ VLOAD/2 VOL + V tPHZ VOH - V VOH 0 V VOL Data Input tsu VM th VI VM 0V VM 0V
Output Waveform 1 S1 at VLOAD (see Note B)
VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 . D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
6
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MECHANICAL DATA
MCFP004A- JANUARY 1995 - REVISED FEBRUARY 2002
W (R-GDFP-F16)
CERAMIC DUAL FLATPACK
Base and Seating Plane
0.045 (1,14) 0.026 (0,66)
0.285 (7,24) 0.245 (6,22)
0.006 (0,15) 0.080 (2,03) 0.055 (1,40) 0.305 (7,75) MAX 1 16 0.019 (0,48) 0.015 (0,38) 0.004 (0,10)
0.050 (1,27)
0.430 (10,92) 0.370 (9,40)
0.005 (0,13) MIN 4 Places
8 0.360 (9,14) 0.250 (6,35)
9 0.360 (9,14) 0.250 (6,35) 4040180-3 / C 02/02
NOTES: A. B. C. D. E.
All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification only. Falls within MIL STD 1835 GDFP-1F16 and JEDEC MO-092AC
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MECHANICAL DATA
MLCC006B - OCTOBER 1996
FK (S-CQCC-N**)
28 TERMINAL SHOWN
LEADLESS CERAMIC CHIP CARRIER
18
17
16
15
14
13
12
NO. OF TERMINALS ** 11 10 28 9 8 7 6 68 5 84 44 52 20
A MIN 0.342 (8,69) 0.442 (11,23) 0.640 (16,26) 0.739 (18,78) 0.938 (23,83) 1.141 (28,99) MAX 0.358 (9,09) 0.458 (11,63) 0.660 (16,76) 0.761 (19,32) 0.962 (24,43) 1.165 (29,59) MIN 0.307 (7,80) 0.406 (10,31) 0.495 (12,58) 0.495 (12,58) 0.850 (21,6) 1.047 (26,6)
B MAX 0.358 (9,09) 0.458 (11,63) 0.560 (14,22) 0.560 (14,22) 0.858 (21,8) 1.063 (27,0)
19 20 21 B SQ 22 A SQ 23 24 25
26
27
28
1
2
3
4 0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25)
0.020 (0,51) 0.010 (0,25)
0.055 (1,40) 0.045 (1,14)
0.045 (1,14) 0.035 (0,89)
0.028 (0,71) 0.022 (0,54) 0.050 (1,27)
0.045 (1,14) 0.035 (0,89)
4040140 / D 10/96 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a metal lid. The terminals are gold plated. Falls within JEDEC MS-004
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MECHANICAL DATA
MSOI002B - JANUARY 1995 - REVISED SEPTEMBER 2001
D (R-PDSO-G**)
8 PINS SHOWN 0.050 (1,27) 8 5 0.020 (0,51) 0.014 (0,35) 0.010 (0,25)
PLASTIC SMALL-OUTLINE PACKAGE
0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81)
0.008 (0,20) NOM
Gage Plane 1 A 4 0- 8 0.044 (1,12) 0.016 (0,40)
0.010 (0,25)
Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) 0.004 (0,10)
PINS ** DIM A MAX A MIN
8 0.197 (5,00) 0.189 (4,80)
14 0.344 (8,75) 0.337 (8,55)
16 0.394 (10,00) 0.386 (9,80)
4040047/E 09/01 NOTES: A. B. C. D. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15). Falls within JEDEC MS-012
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MECHANICAL DATA
MSSO002E - JANUARY 1995 - REVISED DECEMBER 2001
DB (R-PDSO-G**)
28 PINS SHOWN 0,65 28 0,38 0,22 15 0,15 M
PLASTIC SMALL-OUTLINE
0,25 0,09 5,60 5,00 8,20 7,40
Gage Plane 1 A 14 0- 8 0,25 0,95 0,55
Seating Plane 2,00 MAX 0,05 MIN 0,10
PINS ** DIM A MAX
14
16
20
24
28
30
38
6,50
6,50
7,50
8,50
10,50
10,50
12,90
A MIN
5,90
5,90
6,90
7,90
9,90
9,90
12,30 4040065 /E 12/01
NOTES: A. B. C. D.
All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150
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MECHANICAL DATA
MTSS001C - JANUARY 1995 - REVISED FEBRUARY 1999
PW (R-PDSO-G**)
14 PINS SHOWN
PLASTIC SMALL-OUTLINE PACKAGE
0,65 14 8
0,30 0,19
0,10 M
0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 A 7 0- 8 0,75 0,50
Seating Plane 1,20 MAX 0,15 0,05 0,10
PINS ** DIM A MAX
8
14
16
20
24
28
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153
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