參數(shù)資料
型號(hào)： 935266812118
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： SPECIALTY TELECOM CIRCUIT, PDSO16
封裝： PLASTIC, SOT-109, SO-16
文件頁數(shù)： 26/31頁
文件大小： 224K
代理商： 935266812118
1999 Nov 03
4
Philips Semiconductors
Product specication
SDH/SONET STM4/OC12 and
1.25 Gbits/s Gigabit Ethernet postampliers
TZA3044; TZA3044B
PINNING
Note
1. Pin type abbreviations: O = Output, I = Input, S = power Supply and A = Analog function.
SYMBOL
PIN
TZA3044T
TZA3044TT
PAD
TZA3044U
TYPE(1)
DESCRIPTION
SUB
1
1, 14
S
substrate pin; must be at the same potential as pin AGND
TEST
2
2, 10, 15,
21, 26
for test purpose only; to be left open in the application
AGND
3
3, 4, 6, 9
S
analog ground; must be at the same potential as pin DGND
DIN
4
7
I
differential input; complementary to pin DINQ; DC bias level is set
internally at approximately 2.1 V
DINQ
5
8
I
differential input; complementary to pin DIN; DC bias level is set
internally at approximately 2.1 V
VCCA
6
11, 12
S
analog supply voltage; must be at the same potential as pin VCCD
CF
7
13
A
input for connection of capacitor to set time constant of level
detector input lter (optional); the capacitor should be connected
between VCCA and pin CF
JAM
8
16
I
PECL-compatible input (TTL compatible for the TZA3044B);
controls the output buffers pins DOUT and DOUTQ; when a LOW
signal is applied, the outputs will follow the input signal; when a
HIGH signal is applied, the output buffers will latch into LOW and
HIGH states respectively; when not connected, pin JAM is actively
pulled LOW
STQ
9
17
O
PECL-compatible status output of the input signal level detector
(TTL compatible for the TZA3044B); when the input signal is below
the user-programmed threshold level, this output is HIGH;
complementary to pin ST
ST
10
18
O
PECL-compatible status output of the input signal level detector
(TTL compatible for the TZA3044B); when the input signal is below
the user-programmed threshold level, this output is LOW;
complementary to pin STQ
DGND
11
19, 20, 22,
25
S
digital ground; must be at the same potential as pin AGND
DOUTQ
12
23
O
PECL-compatible differential output; forced into a HIGH condition
when pin JAM is HIGH; complementary to pin DOUT
DOUT
13
24
O
PECL-compatible differential output; forced into a LOW condition
when pin JAM is HIGH; complementary to pin DOUTQ
VCCD
14
27, 28
S
digital supply voltage; must be at the same potential as VCCA
Vref
15
29
O
band gap reference voltage; typical value is 1.2 V; internal series
resistor of 1 k
RSET
16
30
A
input signal level detector programming; nominal DC voltage is
VCCA 1.5 V; threshold level is set by connecting an external
resistor between VCCA and pin RSET or by forcing a current into
pin RSET; default value for this resistor is 180 k
which
corresponds with approximately 4 mV (p-p) differential input signal
n.c.
5, 31, 32
not connected
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