74LVX138MTCX

74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer June 1993 Revised October 2003 74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer General Description The LVX138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for high-speed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three LVX138 devices or a 1-of-32 decoder using four LVX138 devices and one inverter. Features s Input voltage level translation from 5V to 3V s Ideal for low power/low noise 3.3V applications s Guaranteed simultaneous switching noise level and dynamic threshold performance Ordering Code: Order Number 74LVX138M 74LVX138SJ 74LVX138MTC Package Number M16A M16D MTC16 Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols Connection Diagram Pin Descriptions IEEE/IEC Pin Names A0–A2 E1 – E2 E3 O0–O7 Description Address Inputs Enable Inputs Enable Input Outputs © 2003 Fairchild Semiconductor Corporation DS011615 www.fairchildsemi.com 74LVX138 Functional Description The LVX138 high-speed 1-of-8 decoder/demultiplexer accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive activeLOW outputs (O0–O7). The LVX138 features three Enable inputs, two active-LOW (E1, E2) and one active-HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW and E3 is HIGH. The LVX138 can be used as an 8-output demultiplexer by using one of the active LOW Enable inputs as the data input and the other Enable inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active-HIGH or active-LOW state. Truth Table Inputs E1 H X X L L L L L L L L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Outputs A1 X X X L L H H L L H H A2 X X X L L L L H H H H O0 H H H L H H H H H H H O1 H H H H L H H H H H H O2 H H H H H L H H H H H O3 H H H H H H L H H H H O4 H H H H H H H L H H H O5 H H H H H H H H L H H O6 H H H H H H H H H L H O7 H H H H H H H H H H L E2 X H X L L L L L L L L E3 X X L H H H H H H H H A0 X X X L H L H L H L H Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 74LVX138 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Input Diode Current (IIK) VI = −0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = −0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current (ICC or IGND) Storage Temperature (TSTG) Power Dissipation −0.5V to +7.0V −20 mA −0.5V to 7V −20 mA +20 mA −0.5V to VCC + 0.5V ±25 mA ±75 mA −65°C to +150 °C 180 mW Recommended Operating Conditions (Note 2) Supply Voltage (VCC) Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Input Rise and Fall Time (∆t/∆V) 2.0V to 3.6V 0V to 5.5V 0V to VCC −40°C to +85°C 0 ns/V to 100 ns/V Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 2: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH Parameter HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage VOL LOW Level Output Voltage IIN ICC Input Leakage Current Quiescent Supply Current VCC 2.0 3.0 3.6 2.0 3.0 3.6 2.0 3.0 3.0 2.0 3.0 3.0 3.6 3.6 1.9 2.9 2.58 0.0 0.0 0.1 0.1 0.36 ±0.1 4.0 2.0 3.0 TA = +25°C Min 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.48 0.1 0.1 0.44 ±1.0 40.0 µA µA V V Typ Max TA = −40°C to +85°C Min 1.5 2.0 2.4 0.5 0.8 0.8 VIN = VIL or VIH IOH = −50 µA IOH = −50 µA IOH = −4 mA VIN = VIL or VIH IOL = 50 µA IOL = 50 µA IOL = 4 mA VIN = 5.5V or GND VIN = VCC or GND V V Max Units Conditions Noise Characteristics (Note 3) Symbol VOLP VOLV VIHD VILD Parameter Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum HIGH Level Dynamic Input Voltage Maximum LOW Level Dynamic Input Voltage VCC (V) 3.3 3.3 3.3 3.3 TA = 25°C Typ 0.3 −0.3 Limit 0.5 −0.5 2.0 0.8 Units V V V V CL (pF) 50 50 50 50 Note 3: Input tr = tf = 3 ns 3 www.fairchildsemi.com 74LVX138 AC Electrical Characteristics Symbol tPLH tPHL Parameter Propagation Delay Time A n to On tPLH tPHL Propagation Delay Time E1 or E2 to On tPLH tPHL Propagation Delay Time E 3 to On tOSHL tOSLH Output to Output Skew (Note 4) 3.3 ± 0.3 2.7 3.3 3.3 ± 0.3 2.7 3.3 ± 0.3 2.7 VCC (V) 2.7 Min TA = +25°C Typ 7.1 9.6 5.5 8.0 8.8 11.3 6.9 9.4 8.7 11.2 6.8 9.3 Max 13.8 17.3 8.8 12.3 16.0 19.5 10.4 13.9 16.3 19.8 10.6 14.1 1.5 1.5 TA = −40°C 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 16.5 20.0 10.5 14.0 18.5 22.0 11.5 15.0 19.5 23.0 12.5 16.0 1.5 1.5 ns ns ns ns Units CL (pF) 15 50 15 50 15 50 15 50 15 50 15 50 50 Note 4: Parameter guaranteed by design. tOSLH = |tPLHm–tPLHn|, tOSHL = |tPHLm–tPHLn| Capacitance Symbol CIN CPD Input Capacitance Power Dissipation Capacitance (Note 5) Parameter TA = +25°C Min Typ 4 34 Max 10 TA = −40°C to +85°C Min Max 10 Units pF pF Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: CPD × VCC × IIN + ICC www.fairchildsemi.com 4 74LVX138 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M16A 5 www.fairchildsemi.com 74LVX138 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.com 6 74LVX138 Low Voltage 1-of-8 Decoder/Demultiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 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