SN74LS125A SN74LS126A Quad 3-State Buffers VCC E D O E D O 14 13 12 11 10 9 8 http://onsemi.com 1 2 3 E D O LOW POWER SCHOTTKY 4 5 6 7 E D O GND LS125A VCC E D O E D O 14 13 12 11 10 9 8 14 1 PLASTIC N SUFFIX CASE 646 1 2 3 4 5 6 7 E D O E D O GND LS126A 14 TRUTH TABLES LS125A 1 LS126A INPUTS SOIC D SUFFIX CASE 751A INPUTS E D OUTPUT E D OUTPUT L L H L H X L H (Z) H H L L H X L H (Z) L = LOW Voltage Level H = HIGH Voltage Level X = Don’t Care (Z) = High Impedance (off) ORDERING INFORMATION GUARANTEED OPERATING RANGES Symbol VCC Parameter Supply Voltage Min Typ Max Unit 4.75 5.0 5.25 V 0 25 70 °C TA Operating Ambient Temperature Range IOH Output Current – High – 2.6 mA IOL Output Current – Low 24 mA Semiconductor Components Industries, LLC, 1999 December, 1999 – Rev. 6 1 Device Package Shipping SN74LS125AN 14 Pin DIP 2000 Units/Box SN74LS125AD 14 Pin 2500/Tape & Reel SN74LS126AN 14 Pin DIP 2000 Units/Box SN74LS126AD 14 Pin 2500/Tape & Reel Publication Order Number: SN74LS125A/D SN74LS125A SN74LS126A DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage VOL O Output LOW Voltage Typ Max Unit 2.0 0.8 – 0.65 – 1.5 2.4 Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 0.25 0.4 V IOL = 12 mA 0.35 0.5 V IOL = 24 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table IOZH Output Off Current HIGH 20 µA VCC = MAX, VOUT = 2.4 V IOZL Output Off Current LOW – 20 µA VCC = MAX, VOUT = 0.4 V 20 IIH Input HIGH Current µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current – 0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) –225 mA VCC = MAX mA VCC = MAX – 40 LS125A ICC 20 Power Supply Current LS126A 22 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 = 25°C) Limits Symbol Min Parameter Typ Max tPLH LS125A 9.0 15 tPLH LS126A 9.0 15 LS125A 7.0 18 LS126A 8.0 18 tPHL Propagation g Delay, y Data to Output tPHL Unit ns Output Enable Time to HIGH Level LS125A 12 20 tPZH LS126A 16 25 Output Enable Time to LOW Level LS125A 15 25 tPZL LS126A 21 35 Output Disable Time from HIGH Level LS125A 20 tPHZ LS126A 25 Output Disable Time from LOW Level LS125A 20 tPLZ LS126A 25 http://onsemi.com 2 Test Conditions Figure 2 ns Figures 4 4, 5 ns Figures 3 3, 5 ns Figures 4 4, 5 ns FIgures 3, 3 5 VCC = 5.0 V CL = 45 pF F RL = 667 Ω VCC = 5.0 V CL = 5 5.0 0 pF F RL = 667 Ω SN74LS125A SN74LS126A VIN VOUT 1.3 V VIN 1.3 V 1.3 V 1.3 V tPHL tPLH tPHL 1.3 V 1.3 V VOUT 1.3 V Figure 1. 1.3 V Figure 2. VE VE 1.3 V 1.3 V VE 1.3 V VE tPZL VOUT tPLH tPLZ tPZH ≈ 1.3 V 1.3 V 1.3 V > VOH ≈ 1.3 V 1.3 V VOUT VOL tPHZ 0.5 V 0.5 V Figure 3. Figure 4. VCC RL SW1 TO OUTPUT UNDER TEST 5 kΩ SW2 CL Figure 5. SWITCH POSITIONS SW1 SW2 tPZH SYMBOL Open Closed tPZL Closed Open tPLZ Closed Closed tPHZ Closed Closed http://onsemi.com 3 SN74LS125A SN74LS126A PACKAGE DIMENSIONS 14 8 1 7 N SUFFIX PLASTIC PACKAGE CASE 646–06 ISSUE M B 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. A DIM A B C D F G H J K L M N F L N C –T– SEATING PLANE K H J D 14 PL G 0.13 (0.005) 8 –B– 1 P 7 PL 0.25 (0.010) 7 G M B M R X 45 _ C F –T– SEATING PLANE D 14 PL 0.25 (0.010) M T B J M K S A S 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 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. D SUFFIX PLASTIC SOIC PACKAGE CASE 751A–03 ISSUE F –A– 14 M M 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 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 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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