Datasheet

SN54CBT16244, SN74CBT16244
16-BIT FET BUS SWITCHES
SCDS031I – MAY 1996 – REVISED OCTOBER 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54CBT16244 SN74CBT16244
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
I
I
V
CC
= 0 V
I
= 5.5 V 10 10
µA
I
I
V
CC
= 5.5 V V
I
= 5.5 V or GND ±1 ±1
µ
A
I
CC
V
CC
= 5.5 V,
V
I
= V
CC
or GND
I
O
= 0,
3.2 3 µA
∆I
CC
‡
Control
inputs
V
CC
= 5.5 V,
Other inputs at V
CC
or GND
One input at 3.4 V,
2.5 2.5 mA
C
i
Control
inputs
V
I
= 3 V or 0 2.5 2.5 pF
C
io(OFF)
V
O
= 3 V or 0, OE = V
CC
4.5 4.5 pF
§
V
CC
= 4 V, V
I
= 2.4 V, I
I
= 15 mA 20 20
r
§
V
I
= 0, I
I
= 64 mA 5 10 5 7
Ω
r
on
§
V
CC
= 4.5 V
V
I
= 0, I
I
= 30 mA 5 10 5 7
Ω
V
I
= 2.4 V, I
I
= 15 mA 8 14 8 12
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.
§
Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by
the lower of the voltages of the two (A or B) terminals.
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
SN54CBT16244 SN74CBT16244
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
= 4 V
V
CC
= 5 V
± 0.5 V
V
CC
= 4 V
V
CC
= 5 V
± 0.5 V
UNIT
MIN MAX MIN MAX MIN MAX MIN MAX
t
pd
¶
A or B B or A 0.8* 0.35 0.25 ns
t
en
OE
A or B 10.3 1 9.2 5.5 1 5.1 ns
t
dis
OE
A or B 9.7 1 8.2 5.2 1 5.4 ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
¶
The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when
driven by an ideal voltage source (zero output impedance).