TLK2541 Datasheet, PDF (8/26 Pages) Texas Instruments – 1 TO 2.6 GBPS TRANSCEIVER

TLK2541
SLLS779B – JANUARY 2008 – REVISED APRIL 2008...................................................................................................................................................... www.ti.com
TTL INPUT ELECTRICAL CHARACTERISTICS
over recommended operating conditions (unless otherwise noted), TTL signals: TXD[0:19], TX_CLK, LOOPEN, ENABLE,
PRBS_EN, PRE , CTRL0, CTRL1, TXRATE, RXRATE, REFCLK, LCKREFN, TESTEN, RXCODE
PARAMETER
V_IH High-level input voltage
V_IL Low-level input voltage
I_IH Input high current
I_IL Input low current
C_I Receiver input capacitance
t_r
Rise time, TXD[0..19]
t_f
Fall time, TX_CLK, TXD[0..19]
t_su TXD[0:19], setup to ↑ TX_CLK
t_h TXD[0:19], hold to ↑ TX_CLK
TEST CONDITIONS
See Figure 2
See Figure 2
V_DD = MAX, V_IN = 2 V
V_DD = MAX, V_IN = 0.4 V
0.8 V to 1.7 V, C = 5 pF, See Figure 2
1.7 V to 0.8 V, C = 5 pF, See Figure 2
See Figure 2
See Figure 2
MIN TYP MAX UNIT
1.7
3.6
V
0.8
V
40
µA
–40
µA
4.5
pF
1
ns
1
ns
1.5
ns
0.5
ns
TX_CLK
3.6 V
1.7 V
0.8 V
0V
TXD[0-19]
3.6 V
1.7 V
1.25 V
0.8 V
0V
Figure 2. TTL Data Input Valid Levels for AC Measurements
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