Datasheet
SN65EPT22
www.ti.com
SLLS926A –DECEMBER 2008–REVISED NOVEMBER 2010
TTL INPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V, GND = 0, T
A
= –40°C to 85°C)
CHARACTERISTIC CONDITION MIN TYP MAX UNIT
I
IH
Input HIGH current V
IN
= 2.7 V 20 mA
I
IHH
Input HIGH current max V
IN
= V
CC
100 mA
I
IL
Input LOW current V
IN
= 0.5 V –0.6 mA
V
IK
Input clamp voltage I
IN
= –18 mA –1 V
V
IH
Input high voltage 2.0 V
V
IL
Input low voltage 0.8 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.
PECL OUTPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0.0V)
(2)
–40°C 25°C 85°C
CHARACTERISTIC UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I
CC
Power supply current 39 45 42 47 45 50 mA
V
OH
Output HIGH voltage
(3)
2155 2224 2405 2155 2224 2405 2155 2224 2405 mV
V
OL
Output LOW voltage
(3)
1355 1441 1605 1355 1438 1605 1355 1435 1605 mV
(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) Output parameters vary 1:1 with V
CC
(3) All loading with 50Ω to V
CC
–2.0V
AC CHARACTERISTICS
(1)
(V
CC
= 3.0 V to 3.6 V; GND = 0 V)
(2)
–40°C 25°C 85°C
CHARACTERISTIC UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
f
MAX
Max switching frequency
(3)
, see Figure 5 2.1 2.0 2.0 GHz
t
PLH
/ t
PHL
Propagation delay to differential output 230 550 230 550 230 550 ps
Within device skew
(4)
25 50 25 50 25 50 ps
t
SKEW
Device to device skew
(5)
100 200 100 200 100 200 ps
t
JITTER
Random clock jitter (RMS) 0.2 0.8 0.2 0.8 0.2 0.8 ps
t
r
/ t
f
Output rise/fall times (20%–80%) 150 300 150 300 150 300 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) Measured using a 2.4 V source, 50% duty cycle clock source. All loading with 50 Ω to VCC – 2.0 V.
(3) Maximum switching frequency measured at output amplitude of 300 mV
pp
.
(4) Skew is measured between outputs under identical transitions and conditions on any one device.
(5) Device−to−Device Skew for identical transitions at identical VCC levels.
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