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74LCX139
LOW VOLTAGE CMOS DUAL 2 TO 4 DECODER/DEMULTIPLEXER
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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
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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
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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
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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.