tea1085t NXP Semiconductors, tea1085t Datasheet - Page 19

• Manufacturer Part Number: tea1085t
• Description: Listening-in Circuit For Line-powered Telephone Sets
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. Typical output power is 5 mW into 50
2. Typical output power is 20 mW into 50
3. Typical output power is 40 mW into 50
March 1992
MUTE input; TEA1085
V
V
I
t
P
V
MUTE input; TEA1085A
V
V
I
Power down input
V
V
I
Logic inputs GSC1 and GSC2
V
V
I
SYMBOL
MUTE
W
MUTE
PD
GSC
G
G
IL
IH
R
BB(MUTE)
IL
IH
IL
IH
IL
IH
Listening-in circuit for line-powered
telephone sets
v
v
(toggle function, positive edge
triggered set-reset flip-flop)
LOW level input voltage
HIGH level input voltage
input current
minimum input pulse width
minimum pulse repetition time
supply voltage below which
MUTE toggle is reset
reduction of gain from LSI1,
LSI2 to QLS1, QLS2
LOW level input voltage
HIGH level input voltage
input current
reduction of gain from LSI1,
LSI2 to QLS1, QLS2
LOW level input voltage
HIGH level input voltage
input current
LOW level input voltage
HIGH level input voltage
input current
PARAMETER
MUTE = LOW
MUTE = ON
MUTE = HIGH
MUTE = HIGH
PD = HIGH
GSC = HIGH
CONDITIONS
19
0
1.5
tbf
60
0
1.5
60
0
1.5
0
1.5
MIN.
TEA1085; TEA1085A
50
2
2
100
10
100
2.3
6
22
TYP.
Preliminary specification
0.3
V
tbf
0.3
V
20
0.3
V
2.8
0.3
V
8
28
BB
BB
BB
BB
MAX.
0.4
0.4
0.4
0.4
V
V
ms
V
dB
V
V
dB
V
V
V
V
A
s
A
A
A
UNIT