Features: ` State-of-the-Art Advanced BiCMOS Technology (ABT) WidebusE Design for 2.5-V and 3.3-V Operation and Low Static Power Dissipation
` Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 2.3-V to 3.6-V VCC)
` Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
` High Drive (24/24 mA at 2.5-V VCC and 32/64 mA at 3.3-V VCC)
` Ioff and Power-Up 3-State Support Hot Insertion
` Use Bus Hold on Data Inputs in Place of External Pullup/Pulldown Resistors to Prevent the Bus From Floating
` Auto3-State Eliminates Bus Current Loading When Output Exceeds VCC + 0.5 V
` Flow-Through Architecture Facilitates Printed Circuit Board Layout
` Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise
` ESD Protection Exceeds JESD-22
2000-V Human-Body Model
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101) (A114-A)
` Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
` Packaged in Plastic Fine-Pitch Ball Grid Array Package
NOTE: For tape and reel order entry:
The GKER package is abbreviated to KR.SpecificationsSupply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 0.5 V to 4.6 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Voltage range applied to any output in the high-impedance or power-off state, VO
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Voltage range applied to any output in the high state, VO (see Note 1) . . . . . . . . . . . 0.5 V to 7 V
Output current in the low state, IO: SN54ALVTH32374 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74ALVTH32374 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Output current in the high state, IO: SN54ALVTH32374 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
SN74ALVTH32374 . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 mA
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 50 mA
Package thermal impedance, JA (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
DescriptionThe SN54ALVTH32374 devices are 32-bit edge-triggered D-type flip-flops with 3-state outputs designed for 2.5-V or 3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. SN54ALVTH32374 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
SN54ALVTH32374 can be used as four 8-bit flip-flops, two 16-bit flip-flops, or one 32-bit flip-flop. On the positive transition of the clock (CLK), the Q outputs of the flip-flops take on the logic levels set up at the data (D) inputs. A buffered output-enable (OE) input of SN54ALVTH32374 can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs of SN54ALVTH32374 neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.
OE does not affect internal operations of the flip-flop. Old data of SN54ALVTH32374 can be retained or new data can be entered while the outputs are in the high-impedance state.
When VCC is between 0 and 1.2 V, the SN54ALVTH32374 is in the high-impedance state during power up or power down. However, to ensure the high impedance state above 1.2 V, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor SN54ALVTH32374 is determined by the current-sinking capability of the driver.
SN54ALVTH32374 is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the SN54ALVTH32374 when they are powered down. The power-up 3-state circuitry places the outputs in the high impedance state during power up and power down, which prevents driver conflict.
Active bus-hold circuitry of SN54ALVTH32374 is provided to hold unused or floating data inputs at a valid logic level.
The SN54ALVTH32374 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALVTH32374 is characterized for operation from 40°C to 85°C.
SN54ALVTH32374 Data Sheet
