Philips Semiconductors Product data
CBTD16212
24-bit level shifting bus exchange switch
with 12-bit output enables
2
2001 Sep 28 853–2284 27173
FEATURES
• 5 Ω switch connection between two ports
• TTL compatible control input levels
• Designed to be used in level shifting applications
• Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
• ESD protection exceeds 1500 V HBM per JESD22-114A and
1000 V CDM per JESD22-C101
DESCRIPTION
The CBTD16212 provides 24 bits of high-speed TTL-compatible bus
switching or exchanging. The low on-state resistance of the switch
allows connections to be made with minimal propagation delay.
A diode to V
CC
is integrated into the circuit to allow for level shifting
between 5 V inputs and 3.3 V outputs.
The CBTD16212 operates as 24-bit bus switch or a 12-bit bus
exchanger, which provides data exchanging between the four signal
ports via the data-select (S0–S2) terminals.
The CBT16212 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
pd
Propagation delay
An to Bn
C
L
= 50 pF; V
CC
= 5 V 0.25 ns
C
IN
Input capacitance V
I
= 0 V or V
CC
4.5 pF
C
OUT
Output capacitance Outputs disabled; V
O
= 0 V or V
CC
11.5 pF
r
on
A1 to A2 V
CC
= 5.5 V; V
I
= 0 V 5 Ω
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE ORDER CODE DWG NUMBER
56-Pin Plastic SSOP –40 to +85 °C CBTD16212DL SOT371-1
56-Pin Plastic TSSOP –40 to +85 °C CBTD16212DGG SOT364-1
NOTE:
1. Standard packing quantities and other packaging data is available at www.philipslogic.com/support/packages.
FUNCTION TABLE
S2 S1 S0 A1 A2 FUNCTION
L L L Z Z Disconnect
L L H B1 Z A1 = B1
L H L B2 Z A1 = B2
L H H Z B1 A2 = B1
H L L Z B2 A2 = B2
H L H Z Z Disconnect
H H L B1 B2 A1 = B1, A2 = B2
H H H B2 B1 A1 = B2, A2 = B1
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
LOGIC SYMBOL
FLOW CONTROL
SA00512
1 of 12 Channels
254
353
1
56
55
1A1
1A2
S0
S1
S2
1B1
1B2
