iC-HB

TRIPLE 155 MHz LASER SWITCH

Rev A4, Page 5/8

ELECTRICAL CHARACTERISTICS

Operating Conditions: VDD = 3.5...5.5 V, VTTL = 3.15...5.5 V, Tj = -25...125 °C unless otherwise stated

Item

Symbol

Parameter

Conditions

Unit

No.

Min.

Typ.

Max.

118

Vt(EPx)hi

Input Threshold Voltage hi at

EP1, EP2, EPB

TTL = hi, ENx = open

2

V

119

Vt(EPx)lo

Input Threshold Voltage low at

EP1, EP2, EPB

TTL = hi, ENx = open

0.8

120

Vhys(EPx) Hysteresis

20

mV

121

Vt(CIx)

Threshold Voltage at CI1, CI2,

CIB

I(LDKx) < 5 mA

0.9

1.4

V

122

CR()

Current Matching Chan-

nel1 / Channel2

V(CI1) = V(CI2) = 0...VDD, I(LDKx) =

30...300 mA

0.9

1.1

123

I(NER)

Current in NER

Tj > Toff, V(NER) > 0.6 V

1

20

mA

124

Vsat(NER) Saturation Voltage at NER

Tj > Toff, I(NER) = 1 mA

600

mV

125

Vs(SYNx)hi Saturation Voltage hi at SYN1,

SYN2, SYNB

Vs(SYNx)hi = VDD − V(SYNx), I() = -1 mA,

V(EPx) < V(ENx)

0.4

V

126

Vs(SYNx)lo Saturation Voltage lo at SYN1,

SYN2, SYNB

I() = 1 mA, V(EPx) > V(ENx)

0.4

V

127

Isc(SYNx)hi Short-Circuit Current hi at SYN1,

SYN2, SYNB

V(EPx) < V(ENx), V(SYNx) = 0 V, VTTL = 3.3 V

-20

-3

mA

128

Isc(SYNx)lo Short-Circuit Current lo at SYN1,

SYN2, SYNB

V(EPx) > V(ENx), V(SYNx) = VTTL,

VTTL = 3.3 V

3

20

mA

ELECTRICAL CHARACTERISTICS DIAGRAMS

I(LDK)

t

Figure 1: Laser current pulse in LDK