74LCX139 Low voltage CMOS Dual 2 to 4 decoder / demultiplexer Features 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 24mA Balanced propagation delays: - tPLH tPHL t e l o The 74LCX139 is a low voltage CMOS dual 2 to 4 line Decoder / Demultiplexer fabricated with submicron silicon gate and double-layer metal wiring C2MOS technology. 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 O ) (s ct u d o bs TSSOP16 r P e Description Operating voltage range: - VCC (Opr) = 2.0V to 3.6V t e l o u d o SO-16 r P e ) s ( ct s b O It is ideal for low power and high speed 3.3V applications; it can be interfaced to 5V signal environment for inputs. 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. Order codes July 2006 Part number Package Packaging 74LCX139MTR SO-16 Tape and reel 74LCX139TTR TSSOP16 Tape and reel Rev 4 1/17 www.st.com 17 Contents 74LCX139 Contents 1 Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4 Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ) s ( ct u d o Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 r P e 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 t e l o ) (s t c u d o r P e t e l o s b O 2/17 s b O 74LCX139 1 Logic symbols and I/O equivalent circuit Logic symbols and I/O equivalent circuit Figure 1. IEC logic symbols ) s ( ct Figure 2. u d o r P e Input and output equivalent circuit t e l o ) (s s b O t c u d o r P e t e l o s b O 3/17 Pin settings 74LCX139 2 Pin settings 2.1 Pin connection Figure 3. Pin connection (top through view) ) s ( ct u d o 2.2 r P e t e l o Pin description Table 1. Pin description )- Pin N Symbol t(s 1, 15 uc 2, 3 od 4, 5, 6, 7 Pr 12, 11, 10, 9 e t e l o s b O 4/17 s b O Name and function 1G, 2G Enable inputs 1A, 1B Address inputs 1Y0 to 1Y3 Outputs 2Y0 to 2Y3 Outputs 14, 13 2A, 2B Address inputs 8 GND Ground (0V) 16 VCC Positive supply voltage 74LCX139 2.3 Pin settings Truth table Table 2. Truth table Inputs Outputs Enable Select G B A Y0 Y1 Y2 Y3 H X X H H H H L L L L H H H L L H H L H H L H L H H L L H H H H H Note: X : Do not care 2.4 Logic diagram Figure 4. ) s ( ct H L u d o r P e t e l o Logic diagram ) (s s b O t c u d o r P e Note: s b O t e l o This logic diagram has not to be used to estimate propagation delays 5/17 Maximum rating 3 74LCX139 Maximum rating stressing the device above the rating listed in the "absolute maximum ratings" table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. refer also to the STMicroelectronics sure program and other relevant quality documents. Table 3. Absolute maximum ratings Symbol VCC Parameter Value Unit Supply voltage -0.5 to +7.0 VI DC input voltage -0.5 to +7.0 VO DC output voltage (VCC = 0V) -0.5 to +7.0 VO DC output voltage (high or low state) (1) IIK DC input diode current IOK DC output diode current (2) IO DC output current ICC DC supply current per supply pin IGND DC ground current per supply pin Tstg Storage temperature TL ) (s Lead temperature (10 sec) (s) ct du ete ol s b O V V V -0.5 to VCC + 0.5 V -50 mA -50 mA 50 mA 100 mA 100 mA -65 to +150 C 300 C Value Unit 2.0 to 3.6 V o r P t c u 1. IO absolute maximum rating must be observed 2. VO < GND 3.1 d o Recommended r operating conditions P e t e l Table 4. Recommended operating conditions o s b O Symbol VCC Parameter Supply voltage (1) VI Input voltage 0 to 5.5 V VO Output voltage (VCC = 0V) 0 to 5.5 V VO Output voltage (high or low state) 0 to VCC V IOH, IOL High or low level output current (VCC = 3.0 to 3.6V) 24 mA IOH, IOL High or low level output current (VCC = 2.7V) 12 mA -40 to 85 C 0 to 10 ns/V Top dt/dv Operating temperature Input rise and fall time (2) 1. Truth table guaranteed: 1.5V to 3.6V 2. VIN from 0.8V to 2V at VCC = 3.0V 6/17 74LCX139 4 Electrical characteristics Electrical characteristics Table 5. DC specifications Test condition Symbol Parameter VIH High level input voltage VIL Low level input voltage VOH Value -40 to 85C VCC (V) Min 2.0 2.7 to 3.6 IO=-100 A VCC-0.2 2.7 IO=-12 mA 2.2 High level output voltage r P e 2.7 to 3.6 IO=100 A 2.7 IO=12 mA Low level output voltage II Input leakage current Ioff Power OFF leakage current ICC Quiescent supply current ) s ( t uc d o r I incr. per Input P e 2.4 V 2.2 let o s b V ) s ( ct u d o IO=-18 mA 0.2 0.4 V IO=16 mA 0.4 IO=24 mA 0.55 2.7 to 3.6 VI = 0 to 5.5V 5 A 0 VI or VO = 5.5V 10 A VI = VCC or GND 10 VI or VO= 3.6 to 5.5V 10 VIH = VCC - 0.6V 500 3.0 t e l o V 0.8 IO=-24 mA ICC Max 2.7 to 3.6 3.0 VOL Unit -O 2.7 to 3.6 2.7 to 3.6 A A Table 6. Dynamic switching characteristics s b O Symbol VOLP VOLV Test condition Parameter Dynamic low level quiet output (1) TA = 25 C VCC (V) 3.3 Value Min CL = 50pF VIL = 0V, VIH = 3.3V Typ Unit Max 0.8 V -0.8 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. 7/17 Electrical characteristics 74LCX139 Table 7. AC electrical characteristics Test condition Symbol Parameter tPLH tPHL Propagation Delay Time A, B to Y VCC (V) CL (pF) RL () ts = tr (ns) 2.7 50 500 2.5 Output To Output Skew Time (1) (2) -40 to 85 C Min 1.0 2.7 50 500 5.8 1.0 3.0 to 3.6 50 500 ns 6.2 2.5 3.0 to 3.6 Unit Max 7.3 3.0 to 3.6 tPLH tPHL Propagation Delay Time G to Y tOSLH tOSHL Value ns 5.3 2.5 (s) 1.0 ns t c u 1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|) d o r 2. Parameter guaranteed by design Test condition Symbol Parameter CIN Input capacitance CPD Power dissipation capacitance (1) t c u ) (s s b O VCC (V) P e t e l o Table 8. Capacitive characteristics Value TA = 25 C Min Typ Unit Max 3.3 VIN = 0 to VCC 6 pF 3.3 fIN = 10MHz VIN = 0 or VCC 26 pF 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 d o r P e t e l o s b O 8/17 74LCX139 5 Test circuit Test circuit Figure 5. Test circuit ) s ( ct r P e CL = 50pF or equivalent (includes jig and probe capacitance) RL = 500 or equivalent t e l o RT = ZOUT of pulse generator (typically 50) ) (s u d o s b O t c u d o r P e t e l o s b O 9/17 Waveforms 6 74LCX139 Waveforms Figure 6. Propagation delay for inverting outputs (f = 1MHz; 50% duty cycle) ) s ( ct u d o r P e t e l o Figure 7. Propagation delay for non-inverting outputs (f = 1MHz; 50% duty cycle) ) (s t c u d o r P e t e l o s b O 10/17 s b O 74LCX139 7 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 11/17 Package mechanical data 74LCX139 SO-16 MECHANICAL DATA mm. DIM. MIN. TYP A inch MAX. MIN. TYP. MAX. a1 1.75 0.1 0.068 0.25 a2 0.004 0.010 0.46 0.013 0.018 0.25 0.007 1.64 b 0.35 b1 0.19 C 0.063 0.010 0.5 0.019 c1 ) s ( ct 45 (typ.) D 9.8 10 0.385 E 5.8 6.2 0.228 e 1.27 e3 8.89 3.8 4.0 G 4.6 5.3 L 0.5 1.27 0.62 S u d o 0.050 F M 0.393 r P e 0.149 s b O t e l o 0.244 0.350 0.157 0.181 0.208 0.019 0.050 0.024 8 (max.) ) (s t c u d o r P e t e l o s b O 0016020D 12/17 74LCX139 Package mechanical data TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 c 0.09 0.20 0.004 D 4.9 5 5.1 0.193 E 6.2 6.4 6.6 0.244 E1 4.3 4.4 4.48 0.169 1 e K 0 L 0.45 o s b 8 0.60 0.75 0.0079 du 0.197 ro P e let 0.65 BSC ) s ( ct 0.012 0.201 0.252 0.260 0.173 0.176 0.0256 BSC 0 8 0.018 0.024 0.030 O ) A s ( t c A2 r P e u d o A1 b let o s b e K c L E D O E1 PIN 1 IDENTIFICATION 1 0080338D 13/17 Package mechanical data 74LCX139 Tape & Reel SO-16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. 13.2 12.992 C 12.8 0.504 D 20.2 0.795 N 60 2.362 ) s ( ct 0.882 Ao 6.45 6.65 0.254 Bo 10.3 10.5 0.406 Ko 2.1 2.3 0.082 Po 3.9 4.1 0.153 P 7.9 8.1 ete ) (s t c u d o r P e 14/17 0.519 22.4 l o s s b O MAX. 330 T t e l o TYP. b O 0.311 0.262 o r P du 0.414 0.090 0.161 0.319 74LCX139 Package mechanical data Tape & Reel TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 MAX. 13.2 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 0.504 0.519 ) s ( ct 22.4 0.882 Ao 6.7 6.9 0.264 Bo 5.3 5.5 0.209 Ko 1.6 1.8 0.063 Po 3.9 4.1 0.153 P 7.9 8.1 ete 0.311 0.272 o r P du 0.217 0.071 0.161 0.319 l o s ) (s b O t c u d o r P e t e l o s b O 15/17 Revision history 8 74LCX139 Revision history Table 9. Revision history Date Revision Changes 15-Sep-2004 3 Ordering Codes Revision - pag. 1. 27-Jul-2006 4 New template, temperature ranges updated ) s ( ct u d o r P e t e l o ) (s t c u d o r P e t e l o s b O 16/17 s b O 74LCX139 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST's terms and conditions of sale. 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