DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 232

• Manufacturer Part Number: DS21Q55
• Description: IC TXRX QUAD T1/E1/J1 SCT 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55

• Function: Transceiver
• Interface: E1, J1, T1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Includes: BERT Generator and Detector, Dual HDLC Controllers
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

33.4 Transmit AC Characteristics
AC CHARACTERISTICS: TRANSMIT SIDE
(Figure
(V
TCLK Period
TCLK Pulse Width
TCLKI Period
TCLKI Pulse Width
TSYSCLK Period
TSYSCLK Pulse Width
TSYNC or TSSYNC Setup to TCLK or
TSYSCLK Falling
TSYNC or TSSYNC Pulse Width
TSER, TSIG, TDATA, TLINK, TPOSI,
TNEGI Setup to TCLK, TSYSCLK,
TCLKI Falling
TSER, TSIG, TDATA, TLINK Hold
from TCLK or TSYSCLK Falling
TPOSI, TNEGI Hold from TCLKI
Falling
TCLK, TCLKI or TSYSCLK Rise and
Fall Times
Delay TCLKO to TPOSO, TNEGO
Valid
Delay TCLK to TESO, UT-UTDO
Valid
Delay TCLK to TCHBLK, TCHCLK,
TSYNC, TLCLK
Delay TSYSCLK to TCHCLK,
TCHBLK
Note 8: TSYSCLK = 1.544MHz
Note 9: TSYSCLK = 2.048MHz
Note 10: TSYSCLK = 4.096MHz
Note 11: TSYSCLK = 8.192MHz
Note 12: TSYSCLK = 16.384MHz
DD
= 3.3V ±5%, T
33-11,
PARAMETER
Figure
A
= -40°C to +85°C for DS21Q55; V
33-12, and
Figure
33-13)
SYMBOL
t
t
t
t
R
t
t
t
t
t
t
t
t
t
t
t
t
t
t
PW
CH
HD
HD
DD
CP
CL
LH
LL
SU
SU
D1
D2
D3
LP
SP
SP
, t
F
232 of 237
DD
= 3.3V ±5%, T
(Note 8)
(Note 9)
(Note 10)
(Note 11)
(Note 12)
CONDITIONS
A
= 0°C to +70°C for DS21Q55N)
MIN
20
20
20
20
20
20
20
50
20
20
20
TYP (E1)
488 (E1)
648 (T1)
488 (E1)
648 (T1)
0.5 t
0.5 t
0.5 t
0.5 t
0.5 t
0.5 t
648
448
244
122
61
CP
CP
LP
LP
SP
SP
MAX
25
50
50
50
22
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns