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| @Ob3/4EAeN/|--1/2q MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 A1/2s1/2XIC GENERAL DESCRIPTION \aO-z M45026/7/8 The M45026 is a CMOS ASIC encoder. It will en-code 9 parallel inputs and serially transmit them to the output when TE depressed. These address inputs are 3 states i.e. LOW (0)BOPEN (X) and HIGH (1). FEATURES ~So E oscillator. RC E 39 =19,683 codes, "0","X","1" Tri-states. E Minimum two transmission words. APPLICATIONS ~AI E Car/home alarm system, garage control etc.. BLOCK DIAGRAM \aeoI X Y Z Oscillator Freq Divider Output Driver DO TE A0 Input Control A8 Central Control Logic unit *All specs and applications shown above subject to change without prior notice. ( HWqoIW(R)aeENN|O ,1/2qow|ae-x) 1/5 2004-05-28 @Ob3/4EAeN/|--1/2q MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 A1/2s1/2XIC ABSOLUTE MAXIMUM RATING Parameter Supply Voltage Input Voltage Operating Temperature Storage Temperature Rating -0.3 to 15 -0.2~VDD +0.2 -20 to 75 -50 to 125 M45026/7/8 (TA=25J ) Unit V V J J ELECTRICAL CHARACTERISTICS Characteristics Operating Voltage Operating Current Quiescent Current Output Drive Current Input Voltage Oscillator Frequency Sym. VDD IOP ISB IO VIH VIL Fosc Min. 2.4 w w w Typ. w 0.1 0.1 2 VDD VSS 22 Max. 15 1 0.5 w VDD VSS +0.2 w Unit V gA mA mA V KHz No load Conditions @VDS=1.2V VDD -0.2 VSS w ExternalO 30% PIN DESCRIPTION No. 1~7 8 9~10 11 12 13 14 15 16 Name A0~A7 VSS A7BA8 X Y Z TE DO VDD Description 3 states address inputs Negative power supply 3 states address inputs Oscillator input Oscillator output Oscillator output Transmit enable Data output Positive power supply A0 A1 A2 A3 A4 A5 A6 VSS M45026 1 16 VDD DO TE Z Y X A8 A7 8 9 2/5 2004-05-28 @Ob3/4EAeN/|--1/2q MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 A1/2s1/2XIC TIMING WAVEFORM (1) Bit format M45026/7/8 OSC "1" "0" "OPEN" Address / Data Bit (2) TIMING DIAGRAM TE 65 ns < t < 1 word t > 1 word DO 2 words Transmitted Continuously N x 2 words ( N = 1, 2, 3, .... ) 1 or 2 words M45026 F-V Curve 350 325 300 275 250 225 200 175 150 125 100 75 50 25 0 0 2 4 6 8 10 12 14 16 18 Rz=20KO , Cy=120PF, Rx=10KO Rz=20KO , Cy=250PF, Rx=10KO Rz=20KO , Cy=500PF, Rx=10KO Rz=20KO , Cy=1000PF, Rx=10KO Rz=20KO , Cy=2200PF, Rx=10KO Rz=20KO , Cy=5000PF, Rx=10KO Fosc ( KHz ) VDD ( V ) 3/5 2004-05-28 @Ob3/4EAeN/|--1/2q MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 A1/2s1/2XIC OPERATING FLOWCHART M45026/7/8 Power ON Stand-by N TEB depressed? 4 words data transmitted N TEB still depressed? Y 4/5 2004-05-28 @Ob3/4EAeN/|--1/2q MOSDESIGN SEMICONDUCTOR CORP. EN/DECODER 3 STATES ENCODER 3 A1/2s1/2XIC APPLICATION DIAGRAM N|OqoI M45026/7/8 VDD 1 A0 A1 0 M45026 VDD 1 16 DO IR / RF VDD 1 A0 A1 TE A2 Rz A3 0 M45027/8 VDD 1 16 A5/D0 A6/D1 A7/D2 A2 A3 A4 A5/D0 Z Y X Cy Rx VDD A8/D3 A8/D3 A4 R1 C1 VSS RC DO VT C2 R2 IR / RF A6/D1 VSS 8 9 A7/D2 8 9 VDD 1 A0 A1 0 M45026 VDD 1 18 DO IR / RF TE A2 A3 A4 A5/D0 A8/D3 A6/D1 VSS 9 10 A7/D2 Z Y X Rz Cy Rx VDD * @VDD=12V, Rx=20 K[ , Rz=10K[ , Cy=500 PF. * All specs and applications shown above subject to change without prior notice. ( HWqoIW(R)aeENN|O ,1/2qow|ae-x) 5/5 2004-05-28 |
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