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MC12439 Arkusz danych(PDF) 5 Page - Motorola, Inc |
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MC12439 Arkusz danych(HTML) 5 Page - Motorola, Inc |
5 / 11 page MC12439 TIMING SOLUTIONS BR1333 — Rev 6 5 MOTOROLA Figure 4. Serial Test Clock Block Diagram FDIV4 MCNT LOW FOUT MCNT FREF HIGH TEST MUX 7 0 TEST FOUT (VIA ENABLE GATE) N DIVIDE (1, 2, 4, 8) 0 1 PLL 12439 LATCH Reset PLOADB M COUNTER SLOAD T0 T1 T2 VCO_CLK SHIFT REG 12–BIT DECODE SDATA SCLOCK MCNT FREF SEL_CLK • T2=T1=1, T0=0: Test Mode • SCLOCK is selected, MCNT is on TEST output, SCLOCK DIVIDE BY N is on FOUT pin PLOADB acts as reset for test pin latch. When latch reset T2 data is shifted out TEST pin. Shift Reg Out DC CHARACTERISTICS (TA = 0 to 70°C; VCC = 3.3 to 5.0V ±5%) Symbol Characteristic Min Typ Max Unit Condition VIH Input HIGH Voltage 2.0 V VCC = 3.3 to 5.0V VIL Input LOW Voltage 0.8 V VCC = 3.3 to 5.0V IIN Input Current 1.0 mA IOH Output HIGH Current (Note 1.) (FOUT/FOUT Only) 50 mA Continuous Current VOH Output HIGH Voltage TEST 2.5 V IOH = –0.8mA, (Note 2.) VOL Output LOW Voltage TEST 0.4 V IOL = 0.8mA, (Note 2.) VOH Output HIGH Voltage FOUT FOUT 2.27 2.47 V VCC = 3.3V (Notes 3., 4.) VOL Output LOW Voltage FOUT FOUT 1.49 1.68 V VCC = 3.3V (Notes 3., 4.) ICC Power Supply Current VCC PLL_VCC 90 15 110 20 mA 1. Maximum IOH spec implies the device can drive 25Ω impedance with the PECL outputs. 2. See Applications Information section for output level versus frequency information. 3. Output levels will vary 1:1 with VCC variation. 4. 50 Ω to VCC – 2.0V pulldown. |
Podobny numer części - MC12439 |
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Podobny opis - MC12439 |
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