Datasheet

SN74GTLPH16912
18-BIT LVTTL-TO-GTLP UNIVERSAL BUS TRANSCEIVER
SCES288C – OCTOBER 1999 – REVISED JULY 2001
3–227
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range for GTLP
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
IK
V
CC
= 3.15 V, I
I
= –18 mA –1.2 V
V
CC
= 3.15 V to 3.45 V, I
OH
= –100 µA V
CC
–0.2
V
OH
A port
I
OH
= –12 mA 2.4
V
V
CC
= 3.15 V
I
OH
= –24 mA 2
V
CC
= 3.15 V to 3.45 V, I
OL
= 100 µA 0.2
A port
I
OL
= 12 mA 0.4
V
CC
= 3.15 V
I
OL
= 24 mA 0.5
V
OL
V
CC
= 3.15 V to 3.45 V, I
OL
= 100 µA 0.2
V
I
OL
= 10 mA 0.2
B port
V
CC
= 3.15 V
I
OL
= 40 mA 0.4
I
OL
= 50 mA 0.55
A-port and
V
I
= 0 or V
CC
±10
I
I
‡
control inputs
V
CC
= 3.45 V
V
I
= 5.5 V ±20
µA
I
B port
CC
V
I
= 0 to 1.5 V ±10
µ
I
BHL
§
A port V
CC
= 3.15 V, V
I
= 0.8 V 75 µA
I
BHH
¶
A port V
CC
= 3.15 V, V
I
= 2 V –75 µA
I
BHLO
#
A port V
CC
= 3.45 V, V
I
= 0 to V
CC
500 µA
I
BHHO
||
A port V
CC
= 3.45 V, V
I
= 0 to V
CC
–500 µA
Outputs high 50
I
CC
A or B port
V
CC
= 3.45 V, I
O
= 0,
V
I
(A-port or control input) = V
CC
or GND,
Outputs low 50
mA
V
I
(B port) = V
TT
or GND
Outputs disabled 50
∆I
CC
k
V
CC
= 3.45 V, One A-port or control input at V
CC
– 0.6 V,
Other A-port or control inputs at V
CC
or GND
1.5 mA
C
i
Control inputs V
I
= 3.15 V or 0 4 5.5 pF
A port V
O
= 3.15 V or 0 7 8.5
C
io
B port V
O
= 1.5 V or 0 8.5 9.5
pF
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
For I/O ports, the parameter I
I
includes the off-state output leakage current.
§
The bus-hold circuit can sink at least the minimum low sustaining current at V
IL
max. I
BHL
should be measured after lowering V
IN
to GND and
then raising it to V
IL
max.
¶
The bus-hold circuit can source at least the minimum high sustaining current at V
IH
min. I
BHH
should be measured after raising V
IN
to V
CC
and
then lowering it to V
IH
min.
#
An external driver must source at least I
BHLO
to switch this node from low to high.
||
An external driver must sink at least I
BHHO
to switch this node from high to low.
k
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
hot-insertion specifications for A port over recommended operating free-air temperature range
PARAMETER TEST CONDITIONS MIN MAX UNIT
I
off
V
CC
= 0, BIAS V
CC
= 0, V
I
or V
O
= 0 to 5.5 V 10 µA
I
OZPU
V
CC
= 0 to 1.5 V, V
O
= 0.5 V to 3 V, OE = 0 ±30 µA
I
OZPD
V
CC
= 1.5 V to 0, V
O
= 0.5 V to 3 V, OE = 0 ±30 µA