Features:

• Eight independent RS-232 interfaces
• PCI bus specification 2.1 compliant
• Speeds to 921.6 kbps
• 16750 UARTs with 64-byte FIFOs standard
• Four-layer board design
• All ports share a single PCI interrupt
• Optional surge suppression package
• Eight RJ-11 modular connectors
• Windows 95/98/NT/2000/XP and OS/2 supported

Model

ESC-100M

Full Description

The ESC-100M leverages the PCI 2.1 specification to provide multiple serial ports while using minimal system resources. The ESC-100M requires only one PCI slot to provide eight independent RS-232 ports. All eight channels are addressed in a continuous 64-byte I/O block for simplified software access. All channels share a single PCI interrupt, and an interrupt status register is available for determining the interrupt source. As the ESC-100M completely conforms to the PCI specification, users are ensured Plug & Play capability.

The ESC-100M is implemented with eight 16750 UARTs containing 64-byte FIFOs. It has a clock multiplying feature allowing the board to achieve data rates as high as 921.6 kbps. The high clock speeds and deep FIFOs will greatly reduce CPU overhead, making the ESC-100M an ideal choice for heavy multi-tasking environments.

To maintain maximum signal integrity, the ESC-100M uses a four-layer board design. For even more protection in industrial environments, an optional surge suppression package is available. This "IND" option applies a surge suppressor to each line that is capable of sustaining up to 40A 20ms peak transient surges, a clamping voltage of 30V and a peak energy dissipation of 0.1 Joules. (Note that implementing the IND option restricts the board's speed to 115.2 kbps.)

The ESC-100M connects to serial peripherals via eight RJ-11 modular (phone jack) connectors. RJ-11 to DB-25 converter cables are also available.

 

ESC-100M
Specifications

BUS INTERFACE: PCI

DATA RATE:

• 921.6 kbps up to 430pF load
• 460.8 kbps up to 900pF load
• 230.4 kbps up to 1800pF load
• 115.2 kbps up to 4300 pF load (IND option max speed)

PORTS: 8

UARTs: 8 16750 UARTs with 64-byte FIFOs

TRANSMIT DRIVERS: SN75150 or compatible

• High Level Output: +5V min, +8V typical
• Low Level Output: -5V max, -8V typical
• Switching Speed(low to high): 1.4 µs with 2500 pF load 40 ns with 15 pF load
• Switching Speed (high to low): 1.5 µs with 2500 pF load 20 ns with 15 pF load

RECEIVE BUFFERS: MC1489 or compatible

• High Level Output: +3V to +13V
• Low Level Output: -3V to -13V
• Switching Speed: 120 ns typical, 175 ns max

POWER REQUIREMENTS: +5V: approx. 260 mA +12: approx. 35 mA

TEMPERATURE: Operating: 0 to 70°C, Storage: -50 to 80°C

HUMIDITY: 10% to 90%

CONNECTOR: The ESC-100M connects to peripheral equipment through RJ-11 connectors, or using the optional adapter cables, male D-25 connectors. When the RJ-11 connector is converted to a D-25 connector, the adapter cables must be assembled with respect to either a DTE or DCE configuration. The standard serial port connections are listed below, as is a diagram of the connector options.

RS-232 Signal Description DTE Connection DCE Connection RJ-11 D-25 RJ-11 D-25 AuxIn (CTS) 1 5 1 4 (DSR) 6 20 Transmit Data (TxD) 2 2 2 3 Carrier Detect (DCD) 3 8 3 8 Signal Ground 4 7 4 7 Receive Data (RXD) 5 3 5 2 AuxOut (DTR) 6 20 6 6 (RTS) 4 5

 

OS SUPPORT: Windows 95/98/NT/2000/XP and OS/2.

CONFIGURATION: Windows does not assign COM1-COM4 to ports addressed at nonstandard locations. The ESC-100M will install in the lowest available address block over COM4. For example, COM 5-12, COM 6-13, etc.

INCLUDED ACCESSORIES: CP-RJ8--set of 8 RJ-11 to D-25 adapter cables.

OPTIONAL ACCESSORIES: ESB-10 breakout box with D-78 to D-78 cable providing one D-25 port and seven D-9 ports.

Certifications:

• CE
• FCC Class B Certified
• PCI Local Bus