Datasheet

SN74GTL16923
18-BIT LVTTL-TO-GTL/GTL+ BUS TRANSCEIVER
SCBS674G – AUGUST 1996 – REVISED AUGUST 2001
2–45
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range for GTL/GTL+
(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
V
CC
= 3 15 V
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
V
CC
= 3 15 V
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
B
p
ort
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
B port
V
CC
= 3.45 V, V
I
= 5.5 V or GND ±5
I
I
A port and control inp ts
V
CC
= 3 45 V
V
I
= V
CC
or GND ±5
µA
A
-port an
d
contro
l
i
nputs
V
CC
=
3
.
45
V
V
I
= 5.5 V or GND ±20
I
off
V
CC
= 0, V
I
or V
O
= 0 to 5.5 V ±100 µA
V
CC
= 3 15 V
V
I
= 0.8 V 75
I
I(hold)
A port
V
CC
=
3
.
15
V
V
I
= 2 V –75
µA
()
V
CC
= 3.45 V
‡
, V
I
= 0.8 V to 2 V ±500
I
OZ
§
A port V
CC
= 3.45 V, V
O
= V
CC
or GND ±10 µA
I
OZH
B port V
CC
= 3.45 V, V
O
= 1.5 V 10 µA
V
CC
=
3.45 V,
Outputs high 60
I
CC
A or B port
V
CC
=
3
.
45
V
,
I
O
= 0,
Outputs low 60
mA
V
I
= V
CC
or GND
Outputs disabled 60
∆I
CC
¶
V
CC
= 3.45 V, A-port or control inputs at V
CC
or GND,
One input at V
CC
– 0.6 V
500 µA
C
i
Control inputs V
I
= 3.15 V or 0 2.5 3 pF
C
i
A port V
O
= 3.15 V or 0 6 8.5
p
F
C
io
B port V
O
= 3.15 V or 0 7 9.5
pF
†
All typical values are at V
CC
= 3.3 V, T
A
= 25°C.
‡
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another.
§
For I/O ports, the parameter I
OZ
includes the input leakage current.
¶
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.