STMicroelectronics 54AC164245
The 54AC164245 is a rad-hard advanced high-speed CMOS, Schmitt trigger, 16-bit, bidirectional, multi-purpose transceiver with 3-state outputs and cold sparing. Designed to be used as an interface between a 5 V bus and a 3.3 V bus in mixed 5 V/3.3 V supply systems, it achieves high-speed operations while the CMOS lowpower dissipation is kept. This IC is intended for a two-way asynchronous communication between data buses.| Part No. | 54AC164245 |
|---|---|
| Datasheet | 54AC164245 Download |
| Manufacturer |  STMicroelectronics |
| Description | Rad-hard 16-bit transceiver |
| Buy | Stock & Price |
FEATURES
● Fully compatible with the 54ACS164245● Dual supply bidirectional level shifter
● Extended voltage range from 2.3 V to 5.5 V
● Separated enable pin for 3-state output
● Schmidt-triggered I/Os: 100 mV hysteresis
● Internal 26 Ω limiting resistor on each I/O
● High speed: Tpd = 8 ns maximum
● Fail safe
● Cold spare
● Hermetic package
● Guaranteed up to 100 krad (Si) TID
● No SEL at 110 MeV.cm2/mg
● RHA QML-V qualified
● SMD: 5962R98580
● Mass : 1.5 g
DESCRIPTION
All pins have cold spare buffers to change them to high impedance when VDD is tied to ground. The direction of the data transmission is determined by the nDIR inputs. The A port interfaces with the 3.3 V bus can also operate at 2.3 V. The B port operates with the 5 V bus. The 54AC164245 is packaged in hermetic ceramic Flat 48-lead screened as per MILPRF-38535 to comply with the needs of space applications. It is available with the upper metallic lid either floating or internally connected to ground. DS6995 - Rev 12 - June 2026 For further information, contact your local STMicroelectronics sales office.
