MC74HC157A Quad 2-Input Data Selectors / Multiplexers High–Performance Silicon–Gate CMOS The MC74HC157A is identical in pinout to the LS157. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device routes 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in noninverted form. A high level on the Output Enable input sets all four Y outputs to a low level. • • • • • • • Output Drive Capability: 10 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 µA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 82 FETs or 20.5 Equivalent Gates http://onsemi.com MARKING DIAGRAMS 16 PDIP–16 N SUFFIX CASE 648 16 1 1 16 SO–16 D SUFFIX CASE 751B 16 1 16 1 1 A WL YY WW 5 A1 11 A2 4 14 A3 7 9 3 B0 NIBBLE B INPUTS 12 6 B1 Y0 Y1 Y2 DATA OUTPUTS Y3 10 B2 13 B3 SELECT OUTPUT ENABLE PIN 16 = VCC PIN 8 = GND 1 15 FUNCTION TABLE Inputs Output Enable Select Outputs Y0 – Y3 H L L X L H L A0 – A3 B0 – B3 Semiconductor Components Industries, LLC, 2000 = Assembly Location = Wafer Lot = Year = Work Week PIN ASSIGNMENT SELECT 1 16 A0 2 15 B0 3 14 VCC OUTPUT ENABLE A3 Y0 4 13 B3 A1 5 12 Y3 B1 6 11 A2 Y1 7 10 B2 GND 8 9 Y2 ORDERING INFORMATION Device X = don’t care A0 – A3, B0 – B3 = the levels of the respective Data–Word Inputs. March, 2000 – Rev. 8 HC 157A ALYW TSSOP–16 DT SUFFIX CASE 948F 2 A0 NIBBLE A INPUTS HC157A AWLYWW 1 16 LOGIC DIAGRAM MC74HC157AN AWLYYWW 1 Package Shipping MC74HC157AN PDIP–16 2000 / Box MC74HC157AD SOIC–16 48 / Rail MC74HC157ADR2 SOIC–16 2500 / Reel MC74HC157ADT TSSOP–16 96 / Rail MC74HC157ADTR2 TSSOP–16 2500 / Reel Publication Order Number: MC74HC157A/D MC74HC157A ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎ MAXIMUM RATINGS* Symbol VCC Parameter DC Supply Voltage (Referenced to GND) Value Unit – 0.5 to + 7.0 V Vin DC Input Voltage (Referenced to GND) – 0.5 to VCC + 0.5 V Vout DC Output Voltage (Referenced to GND) – 0.5 to VCC + 0.5 V DC Input Current, per Pin ± 20 mA Iout DC Output Current, per Pin ± 25 mA ICC DC Supply Current, VCC and GND Pins ± 50 mA PD Power Dissipation in Still Air, 750 500 450 mW Tstg Storage Temperature – 65 to + 150 _C Iin TL Plastic DIP† SOIC Package† TSSOP Package† This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high–impedance circuit. For proper operation, Vin and Vout should be constrained to the range GND (Vin or Vout) VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. v v _C Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP, SOIC or TSSOP Package) 260 *Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. †Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C SOIC Package: – 7 mW/_C from 65_ to 125_C TSSOP Package: – 6.1 mW/_C from 65_ to 125_C For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎ v v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ v ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ RECOMMENDED OPERATING CONDITIONS Symbol VCC Vin, Vout Parameter Min Max Unit 2.0 6.0 V 0 VCC V – 55 + 125 _C 0 0 0 1000 500 400 ns DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature, All Package Types tr, tf Input Rise and Fall Time (Figure 1) VCC = 2.0 V VCC = 4.5 V VCC = 6.0 V DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) Guaranteed Limit Symbol Parameter Test Conditions VCC V – 55 to 25_C 85_C 125_C Unit VIH Minimum High–Level Input Voltage Vout = VCC – 0.1 V |Iout| 20 µA 2.0 3.0 4.5 6.0 1.5 2.1 3.15 4.2 1.5 2.1 3.15 4.2 1.5 2.1 3.15 4.2 V VIL Maximum Low–Level Input Voltage Vout = 0.1 V |Iout| 20 µA 2.0 3.0 4.5 6.0 0.5 0.9 1.35 1.8 0.5 0.9 1.35 1.8 0.5 0.9 1.35 1.8 V Minimum High–Level Output Voltage Vin = VIH |Iout| 20 µA 2.0 4.5 6.0 1.9 4.4 5.9 1.9 4.4 5.9 1.9 4.4 5.9 V 3.0 4.5 6.0 2.48 3.98 5.48 2.34 3.84 5.34 2.2 3.7 5.2 2.0 4.5 6.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.0 4.5 6.0 0.26 0.26 0.26 0.33 0.33 0.33 0.4 0.4 0.4 VOH Vin = VIH VOL Maximum Low–Level Output Voltage |Iout| |Iout| |Iout| 2.4 mA 6.0 mA 7.8 mA Vin = VIL |Iout| 20 µA Vin = VIL |Iout| |Iout| |Iout| 2.4 mA 6.0 mA 7.8 mA http://onsemi.com 2 V MC74HC157A ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ v v ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎÎÎ ÎÎÎ v v ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎ DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) Guaranteed Limit Symbol Parameter Test Conditions VCC V – 55 to 25_C 85_C 125_C Unit Maximum Input Leakage Current Vin = VCC or GND 6.0 ± 0.1 ± 1.0 ± 1.0 µA IOZ Maximum Three–State Leakage Current Output in High–Impedance State Vin = VIL or VIH Vout = VCC or GND 6.0 ± 0.5 ± 5.0 ± 10 µA ICC Maximum Quiescent Supply Current (per Package) Vin = VCC or GND Iout = 0 µA 6.0 4.0 40 160 µA Iin NOTE: Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6.0 ns) Guaranteed Limit Symbol Parameter VCC V – 55 to 25_C 85_C 125_C Unit tPLH, tPHL Maximum Propagation Delay, Input A or B to Output Y (Figures 1 and 4) 2.0 3.0 4.5 6.0 105 65 21 18 130 85 26 22 160 115 32 27 ns tPLH, tPHL Maximum Propagation Delay, Select to Output Y (Figures 2 and 4) 2.0 3.0 4.5 6.0 110 70 22 19 140 90 28 24 165 115 33 28 ns tPLH, tPHL Maximum Propagation Delay, Output Enable to Output Y (Figures 3 and 4) 2.0 3.0 4.5 6.0 100 60 20 17 125 80 25 21 150 110 30 26 ns tTLH, tTHL Maximum Output Transition Time, Any Output (Figures 1 and 4) 2.0 3.0 4.5 6.0 75 27 15 13 95 32 19 16 110 36 22 19 ns Maximum Input Capacitance — 10 10 10 pF Cin NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). Typical @ 25°C, VCC = 5.0 V CPD Power Dissipation Capacitance (Per Package)* 33 pF * Used to determine the no–load dynamic power consumption: P D = C PD V CC 2 f + I CC V CC . For load considerations, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). http://onsemi.com 3 MC74HC157A PIN DESCRIPTIONS INPUTS A0, A1, A2, A3 (Pins 2, 5, 11, 14) The data present on these pins is in its noninverted form. For the Output Enable input at a high level, the outputs are at a low level. Nibble A inputs. The data present on these pins is transferred to the outputs when the Select input is at a low level and the Output Enable input is at a low level. The data is presented to the outputs in noninverted form. CONTROL INPUTS Select (Pin 1) Nibble select. This input determines the data word to be transferred to the outputs. A low level on this input selects the A inputs and a high level selects the B inputs. B0, B1, B2, B3 (Pins 3, 6, 10, 13) Nibble B inputs. The data present on these pins is transferred to the outputs when the Select input is at a high level and the Output Enable input is at a low level. The data is presented to the outputs in noninverted form. Output Enable (Pin 15) Output Enable input. A low level on this input allows the selected input data to be presented at the outputs. A high level on this input sets all outputs to a low level. OUTPUTS Y0, Y1, Y2, Y3 (Pins 4, 7, 9, 12) Data outputs. The selected input Nibble is presented at these outputs when the Output Enable input is at a low level. SWITCHING WAVEFORMS tr tr tf 90% 50% 10% INPUT A OR B GND 90% 50% 10% OUTPUT Y tTLH tTLH tTHL Figure 1. HC157A GND tPHL tPLH tPHL 90% 50% 10% VCC 90% 50% 10% SELECT tPLH OUTPUT Y tf VCC tTHL Figure 2. Y versus Select, Noninverted tr tf VCC 90% 50% 10% OUTPUT ENABLE GND tPHL tPLH 90% 50% 10% OUTPUT Y tTHL tTLH Figure 3. HC157A TEST POINT OUTPUT DEVICE UNDER TEST CL* *Includes all probe and jig capacitance Figure 4. Test Circuit http://onsemi.com 4 MC74HC157A EXPANDED LOGIC DIAGRAM 2 A0 B0 A1 B1 NIBBLE OUTPUTS 5 7 6 Y1 11 A3 B3 SELECT Y0 DATA OUTPUTS A2 B2 OUTPUT ENABLE 4 3 9 10 Y2 14 12 Y3 13 15 1 http://onsemi.com 5 MC74HC157A PACKAGE DIMENSIONS PDIP–16 N SUFFIX CASE 648–08 ISSUE R 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 – 16 9 1 8 B F C DIM A B C D F G H J K L M S L S –T – SEATING PLANE K H D 16 PL 0.25 (0.010) M M J G T A M INCHES MILLIMETERS MIN MAX MIN MAX 0.740 0.770 18.80 19.55 0.250 0.270 6.85 6.35 0.145 0.175 4.44 3.69 0.015 0.021 0.53 0.39 0.040 0.070 1.77 1.02 0.100 BSC 2.54 BSC 0.050 BSC 1.27 BSC 0.008 0.015 0.38 0.21 0.110 0.130 3.30 2.80 0.295 0.305 7.74 7.50 10° 0° 10° 0° 0.020 0.040 1.01 0.51 SOIC–16 D SUFFIX CASE 751B–05 ISSUE J –A – 16 9 1 8 –B – 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. P 8 PL 0.25 (0.010) M B M G K F R X 45° C –T SEATING – PLANE J M D 16 PL 0.25 (0.010) M T B S A S http://onsemi.com 6 DIM A B C D F G J K M P R MILLIMETERS MIN MAX 9.80 10.00 4.00 3.80 1.75 1.35 0.49 0.35 1.25 0.40 1.27 BSC 0.25 0.19 0.25 0.10 7° 0° 6.20 5.80 0.50 0.25 INCHES MIN MAX 0.386 0.393 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° 0.229 0.244 0.010 0.019 MC74HC157A PACKAGE DIMENSIONS TSSOP–16 DT SUFFIX CASE 948F–01 ISSUE O 16X K REF 0.10 (0.004) 0.15 (0.006) T U M T U V S S S K ÉÉÉ ÇÇÇ ÇÇÇ ÉÉÉ K1 2X L/2 16 9 J1 B –U– L SECTION N–N J PIN 1 IDENT. 8 1 N 0.25 (0.010) 0.15 (0.006) T U S A –V– NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH. PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE –W–. M N F DETAIL E –W– C 0.10 (0.004) –T– SEATING PLANE DETAIL E H D G http://onsemi.com 7 DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 4.90 5.10 4.30 4.50 ––– 1.20 0.05 0.15 0.50 0.75 0.65 BSC 0.18 0.28 0.09 0.20 0.09 0.16 0.19 0.30 0.19 0.25 6.40 BSC 0_ 8_ INCHES MIN MAX 0.193 0.200 0.169 0.177 ––– 0.047 0.002 0.006 0.020 0.030 0.026 BSC 0.007 0.011 0.004 0.008 0.004 0.006 0.007 0.012 0.007 0.010 0.252 BSC 0_ 8_ MC74HC157A 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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