YTD428 Datasheet, PDF (8/14 Pages) YAMAHA CORPORATION – DSU LSI for the ISDN Terminal Equipment

❒ DC Characteristics
(DVDD = AVDD = 5 .0V, DVSS = AVSS = 0.0 V, Operating Temperature: Top = 25 ºC)
Parameter
Analog Output Allowable
Load Impedance
Analog Receive Buffer
Input Impedance
Analog Signal Reference
Voltage
Self-Bias VRT
ADC
Self-Bias VRB
Symbol
ZO
Zi1
VSG
VRT
VRB
Condition
Min.
Typ.
Max.
Units
Note 1
30
kΩ
Note 2
10
MΩ
Note 3
Note 4
Note 5
2.45
0.7AVDD - 0.1
0.3AVDD - 0.1
2.50
0.7AVDD
0.3AVDD
2.55
V
0.7AVDD + 0.1 V
0.3AVDD + 0.1 V
Note 1
Note 2
Note 3
Note 4
Note 5
With respect to SGR, SXA pins.
With respect to RXU1 and RXU2 pins.
Set SGR pin to open.
With respect to VRT pin.
With respect to VRB pin.
(DVDD = AVDD = 5.0 V, Top = -20 ~ 70 ºC)
Parameter
High Level Input Voltage (TTL)
Low level Input Voltage (TTL)
High Level Input Voltage (CMOS)
Low Level Input Voltage (COMS)
High Level Output Voltage (TTL)
Low Level Output Voltage (TTL)
Low Level Output Voltage (Open-D)
Leak Current
Idle Condition Leak Current
Power Supply Current
Symbol
VIH
VIH
VIL
VIL
VIH
VIL
VOH
VOL
VOL
IL
ILZ
IDD
Condition
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 3)
(Note 3)
(Note 4)
(Note 5)
(Note 4)
(Note 5)
(Note 6)
(Note 7)
Min.
2.2
3.0
3.5
DVDD - 1.0
DVDD - 1.0
-10
-10
Typ.
36
Max.
0.8
0.8
1.0
DVSS + 0.4
DVSS + 0.4
DVSS + 0.4
10
10
Units
V
V
V
V
V
V
V
V
V
V
V
µA
µA
mA
Note 1
Note 2
Note 3
Note 4
Note 5
Note 6
Note 7
With respect to the digital pins other than RESET, POWMON, CLK1536 and TEST23 ~ 28 pins
With respect to RESET, POWMON pins
With respect to CLK1536, TEST23 ~ 28 pins
With respect to the pin other than HRD, LRD pins
Test condition: Output Current "H" level (IOH) = -0.2 mA, Output Current "L" level (IOL) = 1.2 mA
With respect to HRD, LRD pins (when ODSEL = "H"), Test condition: IOH = -0.2 mA, IOL = 1.2 mA
With respect to HRD, LRD pins (when ODSEL = "L"), Test condition: IOL = 1.2 mA
With using T ref. pt. analog interface
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