Installation
Interface Connection
2-10 NCR 5635 Spray Currency Dispenser Service Manual
NCR - CONFIDENTIAL AND PROPRIETARY
Use pursuant to Company Instructions
Note:
The voltage on the logic interface must not exceed the
dispenser’s 5V supply voltage by more than 0.5V.
The host’s input circuits may be standard TTL, no pull-up resistors
are required. However, any pull-ups used must be at least 1K any
pull-downs used must not exceed 1K.
The dispenser has two types of input circuit:
●
The RXDL circuit may be driven by a standard LSTTL output,
the input incorporates a TTL gate with a 10K pull-up.
●
The CTSL (and RST) input incorporates an HCT TTL gate with a
1K pull-down resistor. This circuit may be driven by an open-
collector TTL driver (for example, 7407) with a 470R pull-up
resistor.
Note:
If the handshake circuits are not used (CTSL and RTSL), then
the standard LSTTL devices are capable of driving the interface.
master.bk Page 10 Wednesday, March 27, 2002 9:35 AM
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