Philips Semiconductors Product specification
CBTD16210
20-bit level shifting bus switch
with 10-bit output enables
2
2000 Oct 12 853-2221 24787
FEATURES
• 5Ω switch connection between two ports
• TTL compatible control input levels
• Designed to be used in 5.5 V to 3.3 V level shifting applications
• Package options include shrink small outline (SSOP) and thin
shrink small outline (TSSOP)
DESCRIPTION
The CBTD16210 provides 20 bits of high-speed TTL-compatible bus
switching. The low on-state resistance of the switch allows
connections to be made with minimal propagation delay.
A diode to V
CC
is integrated in the circuit to allow for level shifting
between 5 V inputs and 3.3 V outputs.
The device is organized as a dual 10-bit bus switch with separate
output-enable (OE
) inputs. It can be used as two 10-bit bus switches
or as one 20-bit bus switch. When OE
is low, the associated 10-bit
bus switch is on, and port A is connected to port B. When OE
is
high, the switch is open, and a high-impedance state exists between
the ports.
The CBTD16210 is characterized for operation from –40°C to
+85°C.
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25°C; GND = 0V
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
An to Yn
C
L
= 50pF; V
CC
= 5V 0.25 ns
C
IN
Input capacitance V
I
= 0V or V
CC
4.3 pF
C
OUT
Output capacitance Outputs disabled; V
O
= 0V or V
CC
6.9 pF
I
CCZ
Total supply current Outputs disabled; V
CC
= 5.5V 4.0 µA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE ORDER CODE DWG NUMBER
48-Pin Plastic SSOP Type III –40°C to +85°C CBTD16210 DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C CBTD16210 DGG SOT362-1
LOGIC SYMBOL
1A1
1A10
2A1
2A10
1B1
1B10
2B1
2B10
2
12
46
36
13
24
35
25
47
88
SA00545
2OE
1OE
FUNCTION TABLE
INPUTS OUTPUTS
1OE 2OE 1A, 1B 2A, 2B
L L 1A = 1B 2A = 2B
L H 1A = 1B Z
H L Z 2A = 2B
H H Z Z
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
