74VHC157_04

74VHC157 QUAD 2 CHANNEL MULTIPLEXER s s s s s s s s s s HIGH SPEED: tPD = 4.1 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 157 IMPROVED LATCH-UP IMMUNITY LOW NOISE: VOLP = 0.8V (MAX.) SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74VHC157MTR 74VHC157TTR DESCRIPTION The 74VHC157 is an advanced high-speed CMOS QUAD 2-CHANNEL MULTIPLEXER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It consists of four 2-input digital multiplexer with common select and strobe inputs. It is a non-inverting multiplexer. When the STROBE input is held high selection of data is inhibited and all the outputs become low. The SELECT decoding determines whether the A or B inputs get routed to their corresponding Y outputs. Power down protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. Figure 1: Pin Connection And IEC Logic Symbols November 2004 Rev. 4 1/12 74VHC157 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N° 1 2, 5, 11, 14 3, 6, 10, 13 4, 7, 9, 12 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y STROBE GND VCC NAME AND FUNCTION Common Data Select Inputs Data Inputs From Source A Data Inputs From Source B Multiplexer Outputs Strobe Input Ground (0V) Positive Supply Voltage Table 3: Truth Table INPUTS STROBE H L L L L X : Don’t care OUTPUT A X L H X X B X X X L H Y L L H L H SELECT X L L H H Figure 3: Logic Diagram 2/12 74VHC157 Table 4: Absolute Maximum Ratings Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 ± 20 ± 25 ± 50 -65 to +150 300 Unit V V V mA mA mA mA °C °C ICC or IGND DC VCC or Ground Current Storage Temperature Tstg TL Lead Temperature (10 sec) Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied Table 5: Recommended Operating Conditions Symbol VCC VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time (note 1) (VCC = 3.3 ± 0.3V) (VCC = 5.0 ± 0.5V) Parameter Value 2 to 5.5 0 to 5.5 0 to VCC -55 to 125 0 to 100 0 to 20 Unit V V V °C ns/V 1) VIN from 30% to 70% of VCC 3/12 74VHC157 Table 6: DC Specifications Test Condition Symbol Parameter VCC (V) 2.0 3.0 to 5.5 2.0 3.0 to 5.5 2.0 3.0 4.5 3.0 4.5 VOL Low Level Output Voltage 2.0 3.0 4.5 3.0 4.5 II ICC Input Leakage Current Quiescent Supply Current 0 to 5.5 5.5 IO=-50 µA IO=-50 µA IO=-50 µA IO=-4 mA IO=-8 mA IO=50 µA IO=50 µA IO=50 µA IO=4 mA IO=8 mA VI = 5.5V or GND VI = VCC or GND TA = 25°C Min. 1.5 0.7VCC 0.5 0.3VCC 1.9 2.9 4.4 2.58 3.94 0.0 0.0 0.0 0.1 0.1 0.1 0.36 0.36 ± 0.1 4 2.0 3.0 4.5 1.9 2.9 4.4 2.48 3.8 0.1 0.1 0.1 0.44 0.44 ±1 40 Typ. Max. Value -40 to 85°C Min. 1.5 0.7VCC 0.5 0.3VCC 1.9 2.9 4.4 2.4 3.7 0.1 0.1 0.1 0.55 0.55 ±1 40 µA µA V V Max. -55 to 125°C Min. 1.5 0.7VCC 0.5 0.3VCC V V Max. Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage VIL VOH Table 7: AC Electrical Characteristics (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) 3.3(*) 3.3(*) 5.0 tPLH tPHL Propagation Delay Time SELECT to Y (**) Value TA = 25°C Min. Typ. 6.2 8.7 4.1 5.6 8.4 10.9 5.3 6.8 8.7 11.2 5.6 7.1 Max. 9.7 13.2 6.4 8.4 13.2 16.7 8.1 10.1 13.6 17.1 8.6 10.6 -40 to 85°C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 11.5 15.0 7.5 9.5 15.5 19.0 9.5 11.5 16.0 19.5 10.0 12.0 -55 to 125°C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 11.5 15.0 7.5 9.5 15.5 19.0 9.5 11.5 16.0 19.5 10.0 12.0 ns ns ns Unit CL (pF) 15 50 15 50 15 50 15 50 15 50 15 50 tPLH tPHL Propagation Delay Time A, B to Y 5.0(**) 3.3 (*) 3.3(*) 5.0(**) 5.0(**) tPLH tPHL Propagation Delay 3.3(*) Time STROBE to Y 3.3(*) 5.0(**) 5.0(**) (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5.0V ± 0.5V 4/12 74VHC157 Table 8: Capacitive Characteristics Test Condition Symbol Parameter TA = 25°C Min. CIN CPD Input Capacitance Power Dissipation Capacitance (note 1) Typ. 6 18 Max. 10 Value -40 to 85°C Min. Max. 10 -55 to 125°C Min. Max. 10 pF pF Unit 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per channel) Table 9: Dynamic Switching Characteristics Test Condition Symbol Parameter VCC (V) 5.0 TA = 25°C Min. Typ. 0.3 -0.8 CL = 50 pF 3.5 -0.3 Max. 0.8 V Value -40 to 85°C Min. Max. -55 to 125°C Min. Max. Unit VOLP VOLV VIHD VILD Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 5.0 V 5.0 1.5 V 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. Figure 4: Test Circuit CL =15/50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) 5/12 74VHC157 Figure 5: Waveform - Propagation Delays For Inverting Conditions Figure 6: Waveform - Propagation Delays For Non-inverting Conditions 6/12 74VHC157 SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45° (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.25 1.64 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.010 0.063 0.018 0.010 0016020D 7/12 74VHC157 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8˚ 0.75 0˚ 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8˚ 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 8/12 74VHC157 Tape & Reel SO-16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.262 0.414 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 9/12 74VHC157 Tape & Reel TSSOP16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 10/12 74VHC157 Table 10: Revision History Date 12-Nov-2004 Revision 4 Description of Changes Order Codes Revision - pag. 1. 11/12 74VHC157 Information furnished is believed to be accurate and reliable. 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