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SN74LS125A SN74LS126A Quad 3-State Buffers
VCC 14 E 13 D 12 O 11 E 10 D 9 O 8
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1 E
2 D
3 O
4 E
5 D
6 O
7 GND
LOW POWER SCHOTTKY
LS125A
VCC 14 E 13 D 12 O 11 E 10 D 9 O 8
14 1
PLASTIC N SUFFIX CASE 646 1 E 2 D 3 O 4 E 5 D 6 O 7 GND
LS126A TRUTH TABLES LS125A
INPUTS E L L H D L H X OUTPUT L H (Z) INPUTS E H H L D L H X OUTPUT L H (Z)
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LS126A
1
SOIC D SUFFIX CASE 751A
L = LOW Voltage Level H = HIGH Voltage Level X = Don't Care (Z) = High Impedance (off)
ORDERING INFORMATION
Device Package 14 Pin DIP 14 Pin 14 Pin DIP 14 Pin Shipping 2000 Units/Box 2500/Tape & Reel 2000 Units/Box 2500/Tape & Reel
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current - High Output Current - Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 - 2.6 24 Unit V C mA mA
SN74LS125AN SN74LS125AD SN74LS126AN SN74LS126AD
(c) Semiconductor Components Industries, LLC, 1999
1
December, 1999 - Rev. 6
Publication Order Number: SN74LS125A/D
SN74LS125A SN74LS126A
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 2.4 0.25 VO OL IOZH IOZL IIH IIL IOS ICC Output LOW Voltage 0.35 Output Off Current HIGH Output Off Current LOW Input HIGH Current 0.1 Input LOW Current Short Circuit Current (Note 1) LS125A Power Supply Current LS126A 22 - 40 - 0.4 -225 20 mA VCC = MAX 0.5 20 - 20 20 V A A A mA mA mA IOL = 24 mA 0.4 - 0.65 Min 2.0 0.8 - 1.5 Typ Max Unit V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = - 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 12 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table
VCC = MAX, VOUT = 2.4 V VCC = MAX, VOUT = 0.4 V VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VIN = 0 V, VE = 4.5 V VIN = 0 V, VE = 0 V
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25C)
Limits Symbol tPLH tPLH tPHL tPHL tPZH Output Enable Time to HIGH Level Output Enable Time to LOW Level Output Disable Time from HIGH Level Output Disable Time from LOW Level Propagation Delay, g y Data to Output Parameter LS125A LS126A LS125A LS126A LS125A LS126A LS125A LS126A LS125A LS126A LS125A LS126A Min Typ 9.0 9.0 7.0 8.0 12 16 15 21 Max 15 15 ns 18 18 20 ns 25 25 ns 35 20 ns 25 20 ns 25 FIgures 3, 5 3 Figures 4 5 4, VCC = 5.0 V CL = 5 0 pF 5.0 F RL = 667 Figures 3 5 3, Figures 4 5 4, VCC = 5.0 V CL = 45 pF F RL = 667 Figure 2 Unit Test Conditions
tPZL
tPHZ
tPLZ
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SN74LS125A SN74LS126A
VIN VIN
1.3 V tPLH 1.3 V
1.3 V tPHL 1.3 V
1.3 V tPHL
1.3 V tPLH 1.3 V
VOUT
1.3 V
VOUT
Figure 1.
Figure 2.
VE 1.3 V VE tPZL VOUT 1.3 V tPLZ 1.3 V VOL 0.5 V 1.3 V
VE 1.3 V tPZH 1.3 V tPHZ > VOH 1.3 V 0.5 V 1.3 V
VE
VOUT
Figure 3.
Figure 4.
VCC
RL
SW1
TO OUTPUT UNDER TEST
5 k SW2
CL
Figure 5.
SWITCH POSITIONS
SYMBOL tPZH tPZL tPLZ tPHZ SW1 Open Closed Closed Closed SW2 Closed Open Closed Closed
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SN74LS125A SN74LS126A
PACKAGE DIMENSIONS
N SUFFIX PLASTIC PACKAGE CASE 646-06 ISSUE M
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. INCHES MIN MAX 0.715 0.770 0.240 0.260 0.145 0.185 0.015 0.021 0.040 0.070 0.100 BSC 0.052 0.095 0.008 0.015 0.115 0.135 0.290 0.310 --- 10_ 0.015 0.039 MILLIMETERS MIN MAX 18.16 18.80 6.10 6.60 3.69 4.69 0.38 0.53 1.02 1.78 2.54 BSC 1.32 2.41 0.20 0.38 2.92 3.43 7.37 7.87 --- 10_ 0.38 1.01
14
8
B
1 7
A F L N -T-
SEATING PLANE DIM A B C D F G H J K L M N
C
K H G D 14 PL 0.13 (0.005)
M
J M
-A-
14 8
D SUFFIX PLASTIC SOIC PACKAGE CASE 751A-03 ISSUE F
-B-
P 7 PL 0.25 (0.010)
M
1
7
B
M
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. DIM A B C D F G J K M P R MILLIMETERS MIN MAX 8.55 8.75 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.337 0.344 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.228 0.244 0.010 0.019
G C
R X 45 _
F
-T-
SEATING PLANE
D 14 PL 0.25 (0.010)
K
M
M
S
J
TB
A
S
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SN74LS125A/D

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