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74LCX139 Dataheets PDF



Part Number 74LCX139
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER
Datasheet 74LCX139 Datasheet74LCX139 Datasheet (PDF)

74LCX139 LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER s s s s s s s s s s 5V TOLERANT INPUTS HIGH SPEED: tPD = 6.2ns (MAX.) at VCC = 3V POWER DOWN PROTECTION ON INPUTS AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) at VCC = 3V PCI BUS LEVELS GUARANTEED AT 24 mA BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2.0V to 3.6V (1.5V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 139 LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17) .

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74LCX139 LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER s s s s s s s s s s 5V TOLERANT INPUTS HIGH SPEED: tPD = 6.2ns (MAX.) at VCC = 3V POWER DOWN PROTECTION ON INPUTS AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) at VCC = 3V PCI BUS LEVELS GUARANTEED AT 24 mA BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2.0V to 3.6V (1.5V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 139 LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17) ESD PERFORMANCE: HBM > 2000V (MIL STD 883 method 3015); MM > 200V SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74LCX139MTR 74LCX139TTR DESCRIPTION The 74LCX139 is a low voltage CMOS DUAL 2 TO 4 LINE DECODER/DEMULTIPLEXER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power and high speed 3.3V applications; it can be interfaced to 5V signal environment for inputs. Figure 1: Pin Connection And IEC Logic Symbols The active low enable input can be used for gating or as a data input for demultiplexing applications. While the enable input is held high, all four outputs are high independently of the other inputs. It has same speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. September 2004 Rev. 3 1/12 74LCX139 Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN N° 1, 15 2, 3 4, 5, 6, 7 12, 11, 10, 9 14, 13 8 16 SYMBOL 1G, 2G 1A, 1B 1Y0 to 1Y3 2Y0 to 2Y3 2A, 2B GND VCC NAME AND FUNCTION Enable Inputs Address Inputs Outputs Outputs Address Inputs Ground (0V) Positive Supply Voltage Table 3: Truth Table INPUTS OUTPUTS ENABLE G H L L L L X : Don’t Care SELECT B X L L H H A X L H L H Y0 H L H H H Y1 H H L H H Y2 H H H L H Y3 H H H H L 2/12 74LCX139 Figure 3: Logic Diagram This logic diagram has not be used to estimate propagation delays Table 4: Absolute Maximum Ratings Symbol VCC VI VO VO IIK IOK IO ICC IGND Tstg TL Supply Voltage DC Input Voltage DC Output Voltage (VCC = 0V) DC Output Voltage (High or Low State) (note 1) DC Input Diode Current DC Output Diode Current (note 2) DC Output Current DC Supply Current per Supply Pin DC Ground Current per Supply Pin Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 50 - 50 ± 50 ± 100 ± 100 -65 to +150 300 Unit V V V V mA mA mA mA mA °C °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 1) IO absolute maximum rating must be observed 2) VO < GND Table 5: Recommended Operating Conditions Symbol VCC VI VO VO IOH, IOL IOH, IOL Top dt/dv Supply Voltage (note 1) Input Voltage Output Voltage (VCC = 0V) Output Voltage (High or Low State) High or Low Level Output Current (VCC = 3.0 to 3.6V) High or Low Level Output Current (VCC = 2.7V) Operating Temperature Input Rise and Fall Time (note 2) Parameter Value 2.0 to 3.6 0 to 5.5 0 to 5.5 0 to VCC ± 24 ± 12 -55 to 125 0 to 10 Unit V V V V mA mA °C ns/V 1) Truth Table guaranteed: 1.5V to 3.6V 2) VIN from 0.8V to 2V at VCC = 3.0V 3/12 74LCX139 Table 6: DC Specifications Test Condition Symbol Parameter VCC (V) -40 to 85 °C Min. 2.0 2.7 to 3.6 0.8 2.7 to 3.6 2.7 3.0 VOL Low Level Output Voltage 2.7 to 3.6 2.7 3.0 II Ioff ICC ∆ICC Input Leakage Current Power Off Leakage Current Quiescent Supply Current ICC incr. per Input 2.7 to 3.6 0 2.7 to 3.6 2.7 to 3.6 IO=-100 µA IO=-12 mA IO=-18 mA IO=-24 mA IO=100 µA IO=12 mA IO=16 mA IO=24 mA VI = 0 to 5.5V VI or VO = 5.5V VI = VCC or GND VI or VO= 3.6 to 5.5V VIH = VCC - 0.6V VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 ±5 10 10 ± 10 500 VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 ±5 10 10 ± 10 500 µA µA µA µA V V 0.8 V Max. Value -55 to 125 °C Min. 2.0 Max. V Unit VIH VIL VOH High Level Input Voltage Low Level Input Voltage High Level Output Voltage Table 4: DYNAMIC SWITCHING CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 3.3 CL = 50pF VIL = 0V, VIH = 3.3V Value TA = 25 °C Min. Typ. 0.8 -0.8 Max. V Unit VOLP VOLV Dynamic Low Level Quiet Output (note 1) 1) Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state. Table 7: AC Electrical Characteristics Test Condition Symbol Parameter VCC (V) 2.7 3.0 to 3.6 2.7 3.0 to 3.6 3.0 to 3.6 CL (pF) 50 50 50 RL (Ω ) 500 500 500 ts = tr (ns) 2.5 2.5 2.5 -40 to 85 °C Min. 1.0 1.0 Max. 7.3 6.2 5.8 5.3 1.0 Value -55 to 125 °C Min. 1.0 1.0 Max. 7.3 6.2 5.8 5.3 1.0 ns ns ns Unit tPLH tPHL tPLH tPHL tOSLH tOSHL Propagation Delay Time A, B to Y Propagation Delay Time G to Y Output To Output Skew Time (note1, 2) 1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outpu.


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