Datasheet
LVTTL OUTPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0 V)
(2)
LVPECL INPUT DC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0.0 V)
(2)
AC CHARACTERISTICS
(1)
(V
CC
= 3.3 V; GND = 0.0 V)
(2) (3)
SN65LVELT23
www.ti.com
......................................................................................................................................................... SLLS929A – JUNE 2009 – REVISED AUGUST 2009
– 40 ° C 25 ° C 85 ° C
PARAMETER CONDITION UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I
OS
Output short-circuit current – 120 – 30 – 120 – 30 – 120 – 30 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 meets the specifications after thermal equilibrium has been established when mounted in a socket or printed circuit board with
maintained transverse airflow greater than 500 lfpm (2.54 m/s). 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 ± 0.3 V
(3) LVTTL output R
L
= 500 Ω to GND
– 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) 10 21 25 10 21 25 10 21 25 mA
I
CCL
Power-supply current (outputs set to low) 15 21 27 15 21 27 15 21 27 mA
V
IH
Input high voltage
(3)
2135 2420 2135 2420 2135 2420 mV
V
IL
Input low voltage
(3)
1490 1825 1490 1825 1490 1825 mV
Input high-voltage common-mode range
V
IHCMR
1.2 V
CC
1.2 V
CC
1.2 V
CC
V
(differential)
(4)
I
IH
Input high current 150 150 150 µ A
I
IL
Input low current – 150 – 150 – 150 µ A
(1) Device meets the specifications after thermal equilibrium has been established when mounted in a socket or printed circuit board with
maintained transverse airflow greater than 500 lfpm (2.54 m/s). 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) LVTTL output R
L
= 500 Ω to GND
(4) V
IHCMR
minimum varies 1:1 with GND, V
IHCMR
maximum varies 1:1 with V
CC
.
– 40 ° C 25 ° C 85 ° C
PARAMETER UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
f
MAX
Maximum switching frequency
(4)
180 300 180 300 180 300 MHz
t
PLH
/t
PHL
Propagation delay to output at 1.5 V 1.2 1.6 2.2 1.2 1.7 2.2 1.2 1.8 2.2 ns
t
SK++
Output-to-output skew++ 30 160 30 150 30 150 ps
t
SK – –
Output to output skew – – 45 180 45 160 45 135 ps
t
SKPP
Part- to-part skew
(5)
60 200 60 200 70 200 ps
t
JITTER
Random clock jitter (RMS) 4 10 4 10 4 10 ps
V
PP
Input voltage swing
(6)
200 800 1000 200 800 1000 200 800 1000 mV
t
r
/t
f
Output rise/fall times (0.8 V – 2 V) 330 585 900 330 600 900 330 630 900 ps
(1) Device meets 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 (2.54 m/s). 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 ± 0.3 V.
(3) TTL output R
L
= 500 Ω to GND and C
L
= 20 pF to GND; see Figure 1 .
(4) f
max
measured for V
OL
< 0.5 V and V
OH
> 2.4 V. See Figure 5 .
(5) Skews are measured between outputs under identical conditions.
(6) 200-mV input assured full logic swing at the output.
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