SN65LVELT23 Datasheet, PDF (3/10 Pages) Texas Instruments – 3.3-V Dual Differential LVPECL/LVDS Buffer to LVTTL Translator

SN65LVELT23
www.ti.com......................................................................................................................................................... SLLS929A – JUNE 2009 – REVISED AUGUST 2009
LVTTL OUTPUT DC CHARACTERISTICS⁽¹⁾ (V_CC = 3.3 V; GND = 0 V)⁽²⁾
PARAMETER
CONDITION
–40°C
25°C
85°C
UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX
I_OS Output short-circuit current
V_OH Output high voltage⁽³⁾
V_OL Output low voltage
I_OH = –3.0 mA
I_OL = 24 mA
–120
2.4
–30
–120 –30 –120
2.4
2.4
0.5
0.5
–30 mA
V
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
LVPECL INPUT DC CHARACTERISTICS⁽¹⁾ (V_CC = 3.3 V; GND = 0.0 V)⁽²⁾
PARAMETER
–40°C
25°C
MIN TYP MAX MIN TYP MAX
85°C
UNIT
MIN TYP MAX
I_CCH
I_CCL
V_IH
V_IL
V_IHCMR
I_IH
I_IL
Power-supply current (outputs set to high)
Power-supply current (outputs set to low)
Input high voltage⁽³⁾
Input low voltage⁽³⁾
Input high-voltage common-mode range
(differential) ⁽⁴⁾
Input high current
Input low current
10
15
2135
1490
1.2
–150
21 25 10
21 27 15
2420 2135
1825 1490
V_CC 1.2
150
–150
21 25
21 27
2420
1825
V_CC
150
10
15
2135
1490
1.2
–150
21 25 mA
21 27 mA
2420 mV
1825 mV
V_CC
V
150 µA
µA
(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.
AC CHARACTERISTICS⁽¹⁾ (V_CC = 3.3 V; GND = 0.0 V)^{(2) (3)}
PARAMETER
f_MAX
t_PLH/t_PHL
t_SK++
t_{SK– –}
t_SKPP
t_JITTER
V_PP
t_r/t_f
Maximum switching frequency⁽⁴⁾
Propagation delay to output at 1.5 V
Output-to-output skew++
Output to output skew– –
Part- to-part skew ⁽⁵⁾
Random clock jitter (RMS)
Input voltage swing ⁽⁶⁾
Output rise/fall times (0.8 V – 2 V)
–40°C
MIN TYP MAX
180 300
1.2 1.6 2.2
30 160
45 180
60 200
4 10
200 800 1000
330 585 900
25°C
MIN TYP
180 300
1.2 1.7
30
45
60
4
200 800
330 600
MAX
2.2
150
160
200
10
1000
900
85°C
MIN TYP
180 300
1.2 1.8
30
45
70
4
200 800
330 630
MAX
2.2
150
135
200
10
1000
900
UNIT
MHz
ns
ps
ps
ps
ps
mV
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.
Copyright © 2009, Texas Instruments Incorporated
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