U4087B Datasheet, PDF (6/8 Pages) TEMIC Semiconductors – Low Voltage Voice Switch Interface Circuit for Hands-free Operation in Telephone

U4087B
Electrical Characteristics
v T_amb = + 25°C, V_S = 5.0 V, CD 0.8 V_, unless otherwise specified
Parameters
Test conditions / Pin
Power supply
Supply current
CD input resistance
CD input voltage
V_B = 6.5 V, CD = 0.8 V
V_B = 6.5 V, CD = 2.0 V
V_B = V_CD = 6.5 V
– High
– Low
Attenuator control
C_T voltage
Pin 12 – V_M
R mode
Idle mode
T mode
C_T source current
R mode
C_T sink current
T mode
C_T idle current
Level detectors and background noise monitor
Source current
at RLO1, RLO2, TLO1,
TLO2
Sink current
at RLO1, RLO2, TLO1,
TLO2
CPT output resistance
CPT leakage current
I_O = 1.0 mA
Symbol Min.
Typ.
Max. Unit
I_B
1.0
60.0
2.0
150.0
m_mAA
R_CD
50.0
90.0
kW
V_CDH
2.0
V_CDL
0.0
V_B
V
0.8
V_CT
+ 240.0
0.0
mV
– 240.0
I_CTR
– 85.0
– 60.0
– 40.0
mA
I_CTT
+ 40.0
+ 60.0
+ 85.0
mA
I_CTS
0.0
mA
I_LSO
– 2.0
mA
I_LSK
4.0
mA
R_CP
100
W
I_CPLK
– 0.2
mA
Ordering Information
U4087B-FP
Type
SO16
Package
6 (8)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 09-Sep-96