Help identifying this resistor array looking component

[brandon.arnold]

Edit: I've updated a few things below with comments I made, after more study. Ignore the second photo (of the diagram).

Hi all. Can anyone venture to guess what may be the structure of this component (see photo 1)? The package reminds me of a resistor array / network, and with the exception of pin 1, it behaves like a 6k-Ohm one. Other resistor arrays on this PCB are prefixed "RA," however, whereas this one is prefixed "U" which is always designated for ICs.

It is a single inline package (SIP-14) labeled "RE9511". Aside from their "U..." reference designators on the PCB, there is a mask label "RCF".

Pin 14 is connected to GND, Pin 1 is connected to VCC. Measure resistance between any pin 2-13 and GND (pin 14) is 6k-Ohm; between any pin 2-13 and VCC is 4.7k-Ohm. Between pin 1 and 14 measures 1k-Ohm. And between any pair of pins (2-3, 4-5, 6-7, 8-9, 10-11, 12-13) measures 220-Ohm. I was not able to pick up any capacitance measurement in place, across any two pins.

[tszaboo]

Probably a parallel bus pullup resistor. It was common before SMT resistors become 0.1 cent in price.

[brandon.arnold]

Thanks for chiming in, @tszaboo. I noticed RCF could mean RC Filter, too? After waiting a little while, I do pick up a measurement of ~6 mF between any pin and ground.

[coromonadalix]

the measurements could be affected by nearby pieces ... the best would be to desolder one  and recheck