Philips Semiconductors Product data
CBTD16211
24-bit level shifting bus exchange switch
with 12-bit output enables
2
2001 Jun 13 853-2260 26502
FEATURES
• 5Ω switch connection between two ports
• TTL compatible control input levels
• Designed to be used in level shifting applications
• Package options include shrink small outline (SSOP) and
thin shrink small outline (TSSOP)
• ESD protection exceeds 1000 V CDM per JESD22-C101
• Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
DESCRIPTION
The CBTD16211 provides 24 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 12-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 CBTD16211 is characterized for operation from –40 to +85 °C.
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25 °C; GND = 0 V
TYPICAL UNIT
t
PLH
t
PHL
Propagation delay
An to Yn
C
L
= 50 pF; V
CC
= 5 V 0.25 ns
C
IN
Input capacitance V
I
= 0 V or V
CC
4.3 pF
C
OUT
Output capacitance Outputs disabled; V
O
= 0 V or V
CC
6.9 pF
I
CC
Total supply current Outputs disabled; V
CC
= 5.5 V 3.0 µA
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE ORDER CODE DWG NUMBER
56-Pin Plastic SSOP Type III –40 to +85 °C CBTD16211DL SOT371-1
56-Pin Plastic TSSOP Type II –40 to +85 °C CBTD16211DGG SOT364-1
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
LOGIC SYMBOL
1A1
1A12
2A1
2A12
1B1
1B12
2B1
2B12
2
14
54
42
15
28
41
29
55
56
SA00510
2OE
1OE
