MNDP83950B-VQB Datasheet, PDF (5/14 Pages) National Semiconductor (TI) – REPEATER INTERFACE CONTROLLER

MNDP83950B-VQB REV 0B0
MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS: TWISTED PAIR
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: Vcc = 5V +5%
SYMBOL
Vron
PARAMETER
Minimum Squelch
Threshold
CONDITIONS
Normal Mode
Reduced Mode
NOTES
PIN-
NAME
PORTS
2-13
PORTS
2-13
MIN
+300
MAX
+585
UNIT
mV
SUB-
GROUPS
1, 2,
3
+340 mV 1, 2,
3
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: Vcc = 5V +5%, Cl = 50pF, Vil(TTL) = 0V, Vih(TTL) = 3V
T1
ACKI low to
ACKO Low
2, 3
24
T2
ACKI High to
ACKO High
2, 3
21
T3a
RX Active to
ACKO Low
3, 4 AUI &
66
PSEUDO
AUI
T4a
RX Inactive to
ACKO High
3, 4 AUI &
325
PSEUDO
AUI
T5a
RX Active to
ACTNd Active
3, 4 AUI &
105
PSEUDO
AUI
T6a
RX Inactive to
ACTNd Inactive
3, 4 AUI &
325
PSEUDO
AUI
T3t
RX Active to
ACKO Low
4 TWISTED
240
PAIR
ONLY
T4t
RX Inactive to
ACKO High
4 TWISTED
255
PAIR
ONLY
T5t
RX Active to
ACTNd Active
4 TWISTED
270
PAIR
ONLY
T6t
RX Inactive to
ACTNd Inactive
4 TWISTED
265
PAIR
ONLY
T15a
ACTNd Active to
TX Active
3, AUI &
585
4, 5 PSEUDO
AUI
T15t
ACTNd Active to
TX Active
4, 5 TWISTED
790
PAIR
ONLY
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
nS 9, 10,
11
5