cbt3857 NXP Semiconductors, cbt3857 Datasheet - Page 4

• Manufacturer Part Number: cbt3857
• Description: 10-bit Bus Switch With 10 Kohm Pull-down Termination Resistors
• Manufacturer: NXP Semiconductors

1. All typical values are at V
2. Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. On–state resistance is
1. The propagation delay is based on the RC time constant of the typical on–state resistance of the switch and a load capacitance, when driven
Philips Semiconductors
DC ELECTRICAL CHARACTERISTICS
NOTES:
AC CHARACTERISTICS
NOTE:
1999 Sep 14
SYMBOL
SYMBOL
SYMBOL
Ci
10-bit bus switch with 10 k pull-down
termination resistors
determined by the lowest voltage of the two (A or B) terminals.
by an ideal voltage source (zero output impedance); 24
O(OFF)
r
r
V
I
t
t
t
C
on
off
CC
pd
en
dis
I
I
IK
I
I
2
2
2
Input clamp voltage
Input leakage current
Input leakage current
Quiescent supply current
Control pins
Power-off leakage current
On-resistance
Off-resistance
Propagation delay
enable
disable
FRONT SIDE
BACK SIDE
PARAMETER
CC
= 3.3 V, T
PARAMETER
PARAMETER
1
184/200-pin DDR SDRAM DIMM
CBT
amb
= 25 C
V
V
V
V
V
V
V
V
V
V
CBT
CC
CC
CC
CC
I
O
CC
CC
CC
CC
= 3 V or 0
= 3 V or 0; OE = V
= 3 V; I
= 3 6 V; V = V
= 3.6 V; V
= 3.6 V; I
= 3 V to 3.6 V; V
= 3 V to 3.6 V; V
= 3 V to 3.6 V; V
= 3 V to 3.6 V; V
CBT
I
The PLL clock distribution device and SSTL registered drivers reduce
signal loads on the memory controller and prevent timing delays and
waveform distortions that would cause unreliable operation
= –18 mA
O
I
TEST CONDITIONS
SSTL16857
= V
= 0, V
CBT
30 pF.
CC
CC
A
A
I
I
FROM (INPUT)
FROM (INPUT)
I
CC
= 1.25 V; I
= 1.65 V
= 0.8 V; V
= 1.7 V; V
or GND
or GND
= V
CBT
4
A or B
CC
SSTL16857
OE
OE
or GND
CBT
I
B
B
= 10 mA
= 1.15 V
= 1.35 V
CBT
A Port
B Port
TO (OUTPUT)
TO (OUTPUT)
PCK857
V
OE
REF
B or A
A or B
A or B
CBT
CBT
Min
20
20
20
1
T
amb
V
= 0 C to +85 C
CC
Min
CBT3857 (9)
LIMITS
1
1
Typ
SW00393
0.73
0.7
2.8
6.4
24
24
24
= +3.3 V 0.3 V
0.1
0.1
20
1
Product specification
CBT3857
Max
750
Max
–1.2
1.5
3
3
500
500
30
30
30
1
1
UNIT
UNIT
UNIT
M
mA
pF
pF
ps
ns
ns
V
A
A
A
A