參數(shù)資料
型號(hào): T7256A
英文描述: Compliance with the New ETSI PSD Requirement
中文描述: 符合新的ETSI PSD的要求
文件頁數(shù): 78/116頁
文件大?。?/td> 1056K
代理商: T7256A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
74
Lucent Technologies Inc.
Electrical Characteristics
All characteristics are for a 15.36 MHz crystal, 135
line load, random 2B+D data, T
A
= –40
°
C to +85
°
C,
V
DD
= 5 V
±
5%, GND = 0 V, and output capacitance = 50 pF.
Power Consumption
Table 35. Power Consumption
Pin Electrical Characteristics
Table 36. Digital dc Characteristics (Over Operating Ranges)
Parameter
Test Conditions
Operating, random data
Powerdown mode
Min
Typ
270
35
Max
350
50
Unit
mW
mW
Power Consumption
Power Consumption
Parameter
Symbol
Test Conditions
Min
Max
Unit
Input Leakage Current:
Low
High
Low
High
Input Voltage:
Low
High
Low-to-high Threshold
High-to-low Threshold
Low
High
Output Leakage Current:
Low
High
Low
High
Low
High
Output Voltage:
Low, TTL
I
ILPU
I
IHPU
I
ILPD
I
IHPD
V
IL
= 0 (pins 2, 6, 7, 11, 44)
V
IH
= V
DD
(pins 2, 6, 7, 11, 44)
V
IL
= 0 (pins 8, 9, 12, 15, 43)
V
IH
= V
DD
(pins 8, 9, 12, 15, 43)
–52
–10
–10
–10
–10
–52
μ
A
μ
A
μ
A
μ
A
V
IL
V
IH
V
ILS
V
IHS
V
ILC
V
IHC
All pins except 2, 6, 43
All pins except 2, 6, 43
Pin 43
Pin 43
Pins 2, 6
Pins 2, 6
2.0
V
DD
– 0.5
0.7 V
DD
0.8
0.5
0.2 V
DD
V
V
V
V
V
V
I
OZL
I
OZH
I
OZLPU
I
OZHPU
I
OZLPD
I
OZHPD
V
OL
= 0, Pin 44 = 0 (pins 3, 14)
V
OH
= V
DD
, Pin 44 = 0 (pins 3, 14)
V
OL
= 0, Pin 44 = 0 (pin 11)
V
OH
= V
DD
, Pin 44 = 0 (pin 11)
V
OL
= 0, Pin 44 = 0 (pins 4, 8, 9, 17)
V
OH
= V
DD
, Pin 44 = 0 (pins 4, 8, 9, 17)
–10
–52
–10
10
10
–10
10
52
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
High, TTL
V
OL
V
OH
I
OL
= 4.5 mA (pin 3)
I
OL
= 19.5 mA (pins 4, 9)
I
OL
= 8.2 mA (pins 8, 17)
I
OL
= 6.5 mA (pin 14)
I
OL
= 3.3 mA (pin 11)
I
OH
= 32.2 mA (pins 4, 9)
I
OH
= 13.5 mA (pins 8, 17)
I
OH
= 10.4 mA (pins 3, 14)
I
OH
= 5.1 mA (pin 11)
2.4
2.4
2.4
2.4
0.4
0.4
0.4
0.4
0.4
V
V
V
V
V
V
V
V
V
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