LC897127K Datasheet, PDF (3/14 Pages) Sanyo Semicon Device – SCSI CD-ROM Decoder with On-Chip DVD Interface

LC897127K
SCSI Pin Input Characteristics
Parameter
Symbol
Conditions
Input threshold voltage
Hysteresis width
V_t+t1
V_t–t1
∆V_tt1
V_DD = 4.50 to 5.50 V
V_DD = 5.0 V
Active Low Output Characteristics
Parameter
Symbol
Conditions
Output high-level voltage
V_OH
Output low-level voltage
V_OL
Note: Only applies to the active-low output pins DB0 to DB7, REQ, and DBPB
Rise Time Test Circuit
SCSI
Driver
TP
47Ω±5%
15pF±5%
+
–
2.5V
min
0.80
0.41
Ratings
typ
1.60
1.10
0.5
Unit
max
2.00
V
V
V
min
2.5
Ratings
typ
Unit
max
V
0.4
V
A12548
Recommended Oscillator and PLL Circuits
LC897127
XTALCK0
XTAL0
PN27
R1
PN28
R2
C1
C2
LC897127
PLL
PN69
R3
PN70
R4
C3
PN71
R5
A12549
A12550
R1 = 120 kΩ, R2 = 47 Ω, C1 = 30 pF
Crystal element oscillator frequency XTALCK0 = 16.9344 MHz
R3 = 7.5 kΩ, R4 = 200 Ω, R5 = 10k Ω, C3 = 0.1 µF
Note: The values listed above for R3, R4, R5, and C3 also apply when the XTALKC0 frequency is 33.8688 MHz.
Applications must be designed so that the analog V_DD and V_SS power supply system is completely independent of the
logic system power supply and is not affected by the logic system power supply in any way.
Since the exact values of these components will vary depending on characteristics of the printed circuit board used and
other factors, consult the manufacturer of the crystal element when designing the oscillator circuit.
No. 6251-3/14