Octal bus switch with quad output enables
Rev. 02 — 15 September 2005
Product data sheet
1. General description
The CBT3244A provides eight bits of high-speed TTL-compatible bus switching in a
standard '244 device pinout. The low ON-state resistance of the switch allows connections
to be made with minimal propagation delay.
The CBT3244A device is organized as two 4-bit low-impedance switches with separate
output-enable (OE) inputs. When OE is LOW, the switch is on and data can ﬂow from
port A to port B, or vice versa. When OE is HIGH, the switch is open and high-impedance
state exists between the two ports.
The CBT3244A is characterized for operation from −40 °C to +85 °C.
s Standard '244-type pinout
s 5 Ω switch connection between two ports
s TTL compatible control input levels
s Package options include:
x plastic small outline (SO20)
x shrink small outline (SSOP20)
x shrink small outline, QSOP (SSOP20)
x thin shrink small outline (TSSOP20)
x depopulated heatsink very thin quad ﬂat package, no leads (DHVQFN20)
s Latch-up protection exceeds 500 mA per JESD78
s ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115 and 1000 V CDM per JESD22-C101