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| M74HC154 4 TO 16 LINE DECODER/DEMULTIPLEXER .HI .t .LOWPOWERDI .HI .OUTPUTDRI .SYMMETRI .BALANCEDPROPAGATI .WI .PI PD GH SPEED = 15 ns (TYP.) at VCC = 5 V SSIPATION ICC = 4 A (MAX.) at TA = 25 C GH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) VE CAPABILITY 15 LSTTL LOADS CAL OUTPUT IMPEDANCE IOH = IOL = 4 mA (MIN.) ON DELAYS tPLH = tPHL DE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V to 6 V N AND FUNCTION COMPATIBLE WITH 54/74LS154 B1R (Plastic Package) M1R (Micro Package) ORDER CODES : M74HC154B1R M74HC154M1R PIN CONNECTIONS (top view) DESCRIPTION The 74HC154 is a high speed CMOS 4 TO 16-LINE DECODER/DEMULTIPLEXER fabricated in silicon 2 gate C MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. A binary code applied to the four inputs (A to D) provides a low level at the selected one of sixteen outputs excluding the other fifteen outputs, when both the strobe inputs, G1 and G2, are held low. When either strobe input is held high, the decording function is inhibited to keep all outputs high. The strobe function makes it easy to expand the decoding lines through cascading, and simplifies the design of address decoding circuits in memory control systems. All inputs are equipped with protection circuits against static discharge and transient excess voltage. NC = No Internal Connection October 1993 1/8 M74HC154 TRUTH TABLE INPUTS G1 L L L L L L L L L L L L L L L L X H X: Don't Care G2 L L L L L L L L L L L L L L L L H X D L L L L L L L L H H H H H H H H X X C L L L L H H H H L L L L H H H H X X B L L H H L L H H L L H H L L H H X X A L H L H L H L H L H L H L H L H X X SELECTED OUTPUT (L) Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12 Y13 Y14 Y15 NONE NONE LOGIC DIAGRAM 2/8 M74HC154 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17 18, 19 23, 22, 21, 20 12 24 SYMBOL Y0 to Y15 NAME AND FUNCTION Outputs (Active LOW) G1, G2 A to D GND VCC Enable Inputs (Active LOW) Address Inputs Ground (0V) Positive Supply Voltage IEC LOGIC SYMBOLS ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK ICC IO or IGND PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Source Sink Current Per Output Pin DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 20 20 25 50 500 (*) -65 to +150 300 Unit V V V mA mA mA mA mW o o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied. (*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC 3/8 M74HC154 RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top tr, tf Supply Voltage Input Voltage Output Voltage Operating Temperature: Input Rise and Fall Time VCC = 2 V VCC = 4.5 V VCC = 6 V Parameter Value 2 to 6 0 to VCC 0 to VCC -40 to +85 0 to 1000 0 to 500 0 to 400 Unit V V V C ns o DC SPECIFICATIONS Test Conditions Symbol VIH Parameter High Level Input Voltage VCC (V) 2.0 4.5 6.0 V IL Low Level Input Voltage High Level Output Voltage 2.0 4.5 6.0 2.0 4.5 6.0 4.5 VOL Low Level Output Voltage 6.0 2.0 4.5 6.0 4.5 6.0 II ICC Input Leakage Current Quiescent Supply Current 6.0 6.0 VI = IO=-20 A VIH or V IL IO=-4.0 mA IO=-5.2 mA VI = IO= 20 A VIH or V IL IO= 4.0 mA IO= 5.2 mA VI = VCC or GND VI = VCC or GND 1.9 4.4 5.9 4.18 5.68 2.0 4.5 6.0 4.31 5.8 0.0 0.0 0.0 0.17 0.18 0.1 0.1 0.1 0.26 0.26 0.1 4 o Value TA = 25 C Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.13 5.63 0.1 0.1 0.1 0.33 0.33 1 40 A A V V Typ. Max. -40 to 85 oC Min. 1.5 3.15 4.2 0.5 1.35 1.8 V Max. V Unit V OH 4/8 M74HC154 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Symbol tTLH tTHL tPLH tPHL tPLH tPHL CIN CPD (*) Parameter Output Transition Time Test Conditions VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Value TA = 25 oC -40 to 85 oC Min. Typ. Max. Min. Max. 30 75 95 8 15 19 7 13 16 65 175 220 19 35 44 16 30 37 55 160 200 17 32 40 15 27 34 5 10 10 57 Unit ns Propagation Delay Time (A, B, C, D - Y) Propagation Delay Time (G1, G2 - Y) Input Capacitance Power Dissipation Capacitance ns ns pF pF (*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD *VCC *fIN + ICC SWITCHING CHARACTERISTICS TEST CIRCUIT TEST CIRCUIT ICC (Opr.) INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICSTEST. 5/8 M74HC154 Plastic DIP24 (0.25) MECHANICAL DATA mm MIN. a1 b b1 b2 D E e e3 F I L 4.445 3.3 15.2 2.54 27.94 14.1 0.175 0.130 0.23 1.27 32.2 16.68 0.598 0.100 1.100 0.555 TYP. 0.63 0.45 0.31 0.009 0.050 1.268 0.657 MAX. MIN. inch TYP. 0.025 0.018 0.012 MAX. DIM. P043A 6/8 M74HC154 SO24 MECHANICAL DATA mm MIN. A a1 a2 b b1 C c1 D E e e3 F L S 7.40 0.50 15.20 10.00 1.27 13.97 7.60 1.27 8 (max.) 0.291 0.19 15.60 10.65 0.35 0.23 0.50 45 (typ.) 0.598 0.393 0.05 0.55 0.299 0.050 0.614 0.420 0.10 TYP. MAX. 2.65 0.20 2.45 0.49 0.32 0.013 0.009 0.020 0.004 MIN. inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012 DIM. L C c1 a2 A e3 E D 24 13 1 12 F a1 b e s b1 7/8 M74HC154 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 8/8 |
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