Datasheet

SN65EPT23
www.ti.com SLLS969A – NOVEMBER 2009– REVISED JANUARY 2011
LVTTL OUTPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0 V, TA = -40C to 85C)
(2)
–40°C 25°C 85°C
PARAMETER CONDITION UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I
OS
Output short circuit current –180 –140 –50 -180 –144 –50 –180 –148 –50 mA
V
OH
Output high voltage
(3)
I
OH
= –3.0 mA 2.4 2.4 2.4 V
V
OL
Output low voltage I
OL
= 24 mA 0.5 0.5 0.5 V
(1) Device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board with
maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature
range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied
individually under normal operating conditions and not valid simultaneously.
(2) All values vary 1:1 with Vcc; Vcc can vary ±0.3V
(3) LVTTL output R
L
= 500 Ω to GND
LVPECL INPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0.0 V)
(2)
–40°C 25°C 85°C
PARAMETER UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I
CCH
Power supply current (Outputs set to high) 15 25 15 25 15 25 mA
I
CCL
Power supply current (Outputs set to low) 15 25 15 25 15 25 mA
V
IH
Input high voltage 2075 2420 2075 2420 2075 2420 mV
V
IL
Input low voltage 1355 1675 1355 1675 1355 1675 mV
V
IHCM
Input high voltage common mode range (Differential)
(3)
1.2 3.3 1.2 3.3 1.2 3.3 V
R
I
IH
Input high current 150 150 150 mA
I
IL
Input low current D mA
–150 –150 –150 0.5
D
(1) Device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board with
maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature
range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied
individually under normal operating conditions and not valid simultaneously.
(2) Input and output parameters vary 1:1 with V
CC
. V
CC
can vary ±0.3 V.
(3) V
IHCMR
min varies 1:1 with GND, V
IHCMR
max varies 1:1 with V
CC
. V
IHCMR
is referenced to most positive side of differential signal
AC CHARACTERISTICS
(1)
(V
CC
= 3.0 V to 3.6 V; GND = 0.0 V)
(2) (3)
–40°C 25°C 85°C
PARAMETER UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
f
MAX
Max switching frequency
(4)
300 300 300 MHz
(Figure 1–Figure 3)
t
PLH
/ Propagation delay low to high; output at 1.5V
1.1 1.3 1.9 1.1 1.3 1.9 1.1 1.3 1.9 ns
t
PHL
T
SK++
Output to output skew++ 110 110 110 ps
T
SK- -
Output to output skew- - 110 110 110 ps
T
SKPP
Part to part skew
(5)
400 400 400 ps
t
JITTER
Random clock jitter (RMS)
(6)
10 10 10 ps
V
PP
Input voltage swing
(7)
150 1200 150 1200 150 1200 mV
t
r
/t
f
Output rise/fall times (0.8 V – 2.0 V) 250 560 800 250 580 800 250 600 800 ps
(1) Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board
with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating
temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are
applied individually under normal operating conditions and not valid simultaneously.
(2) Input parameters vary 1:1 with V
CC
. V
CC
can vary ±0.3V .
(3) TTL output R
L
= 500 Ω to GND and C
L
= 20 pF to GND see Figure 4.
(4) F
max
assures for functionality only; V
OL
and V
OH
levels are assured at DC only
(5) Skews are measured between outputs under identical conditions.
(6) Measured with V
ID
= 1.5 V
PP
at V
CM
= 2.0 V and 1.2 V
(7) 200 mV input assured full logic swing at the output.
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